# Foreign relations of the United Kingdom

The diplomatic foreign relations of the United Kingdom are conducted by the Foreign, Commonwealth and Development Office, headed by the foreign secretary. The prime minister and numerous other agencies play a role in setting policy, and many institutions and businesses have a voice and a role.
The United Kingdom was the world's foremost power during the 19th and early 20th centuries, most notably during the so-called "Pax Britannica"—a period of unrivaled supremacy and unprecedented international peace during the mid-to-late 1800s. The country continued to be widely considered a superpower until the Suez crisis of 1956 and the dismantling of the British Empire left the UK's dominant role in global affairs to be gradually diminished. Nevertheless, the United Kingdom remains a great power and a permanent member of the United Nations Security Council, a founding member of AUKUS, the Commonwealth, Council of Europe, G7, G20, NATO, OECD, OSCE, and the WTO. The UK had been a member state of the European Union (and a member of its predecessors) since 1973. However, due to the outcome of a 2016 membership referendum, proceedings to withdraw from the EU began in 2017 and concluded when the UK formally left the EU on 31 January 2020, and the transition period on 31 December 2020 with an EU trade agreement. Since the vote and the conclusion of trade talks with the EU, policymakers have begun pursuing new trade agreements with other global partners.

## History

Following the formation of the Kingdom of Great Britain (which united England and Scotland) in 1707, British foreign relations largely continued those of the Kingdom of England. British foreign policy initially focused on achieving a balance of power within Europe, with no one country achieving dominance over the affairs of the continent. This policy remained a major justification for Britain's wars against Napoleon, and for British involvement in the First and Second World Wars. Secondly Britain continued the expansion of its colonial "First British Empire" by migration and investment.
France was the chief enemy until the defeat of Napoleon in 1815. It had a much larger population and a more powerful army, but a weaker navy. The British were generally successful in their many wars. The notable exception, the American War of Independence (1775–1783), saw Britain, without any major allies, defeated by the American colonials who had the support of France, the Netherlands and (indirectly) Spain. A favoured British diplomatic strategy involved subsidising the armies of continental allies (such as Prussia), thereby turning London's enormous financial power to military advantage. Britain relied heavily on its Royal Navy for security, seeking to keep it the most powerful fleet afloat, eventually with a full complement of bases across the globe. British dominance of the seas was vital to the formation and maintaining of the British Empire, which was achieved through the support of a navy larger than the next two largest navies combined, prior to 1920. The British generally stood alone until the early 20th century, when it became friendly with the U.S. and made alliances with Japan, France and Russia and Germany former antagonist now ally.

### 1814–1914

The 100 years were generally peaceful—a sort of Pax Britannica enforced by the Royal Navy. There were two important wars, both limited in scope. The Crimean War (1853–1856) saw the defeat of Russia and its threat to the Ottoman Empire. The Second Boer War (1899–1902) saw the defeat of the two Boer republics in South Africa and Boxer Rebellion happen the same year. London became the world's financial centre, and commercial enterprise expanded across the globe. The "Second British Empire" was built with a base in Asia (especially India) and Africa.

### 1920s

After 1918 Britain was a "troubled giant" that was less of a dominant diplomatic force in the 1920s than before. It often had to give way to the United States, which frequently exercised its financial superiority. The main themes of British foreign policy included a leading role at the Paris Peace Conference of 1919–1920, where Lloyd George worked hard to moderate French demands for revenge on Germany. He was partly successful, but Britain soon had to moderate French policy toward Germany further, as in the Locarno Treaties of 1925. Furthermore, Britain obtained "mandates" that allowed it and its dominions to govern most of the former German and Ottoman colonies.
Britain became an active member of the new League of Nations, but its list of major achievements was slight.
Disarmament was high on the agenda, and Britain played a major role following the United States in the Washington Naval Conference of 1921 in working toward naval disarmament of the major powers. By 1933 disarmament agreements had collapsed and the issue became rearming for a war against Germany.
Britain was partially successful in negotiating better terms with United States regarding the large war loans which Britain was obliged to repay. Britain supported the international solution to German reparations through the Dawes Plan and the Young Plan. After the Dawes Plan had helped stabilize Germany's currency and lowered its annual payments, Germany was able to pay its annual reparations using money borrowed from New York banks, and Britain used the money received to pay Washington. The Great Depression starting in 1929 put enormous pressure on the British economy. Britain revived Imperial Preference, which meant low tariffs within the British Empire and higher barriers to trade with outside countries. The flow of money from New York dried up, and the system of reparations and payment of debt died in 1931.
In domestic British politics, the emerging Labour Party had a distinctive and suspicious foreign policy based on pacifism. Its leaders believed that peace was impossible because of capitalism, secret diplomacy, and the trade in armaments. Labour stressed material factors that ignored the psychological memories of the Great War and the highly emotional tensions regarding nationalism and the boundaries of countries. Nevertheless, party leader Ramsay MacDonald devoted much of his attention to European policies.

### 1930s

Vivid memories of the horrors and deaths of the First World War inclined many Britons—and their leaders in all parties—to pacifism in the interwar era. This led directly to the appeasement of dictators (notably of Mussolini and of Hitler) in order to avoid their threats of war.
The challenge came from those dictators, first from Benito Mussolini, Duce of Italy, then from Adolf Hitler, Führer of a much more powerful Nazi Germany. The League of Nations proved disappointing to its supporters; it failed to resolve any of the threats posed by the dictators. British policy involved "appeasing" them in the hopes they would be satiated. By 1938 it was clear that war was looming, and that Germany had the world's most powerful military. The final act of appeasement came when Britain and France sacrificed Czechoslovakia to Hitler's demands at the Munich Agreement of September 1938. Instead of satiation, Hitler menaced Poland, and at last Prime Minister Neville Chamberlain dropped appeasement and stood firm in promising to defend Poland (31 March 1939). Hitler however cut a deal with Joseph Stalin to divide Eastern Europe (23 August 1939); when Germany did invade Poland in September 1939, Britain and France declared war, and the British Commonwealth followed London's lead.

### Second World War

Having signed the Anglo-Polish military alliance in August 1939, Britain and France declared war against Germany in September 1939 in response to Germany's invasion of Poland. This declaration included the Crown colonies and India, which Britain directly controlled. The dominions were independent in foreign policy, though all quickly entered the war against Germany. After the French defeat in June 1940, Britain and its empire stood alone in combat against Germany, until June 1941. The United States gave diplomatic, financial and material support, starting in 1940, especially through Lend Lease, which began in 1941 and attain full strength during 1943. In August 1941, Churchill and Roosevelt met and agreed on the Atlantic Charter, which proclaimed "the rights of all peoples to choose the form of government under which they live" should be respected. This wording was ambiguous and would be interpreted differently by the British, Americans, and nationalist movements.
Starting in December 1941, Japan overran British possessions in Asia, including Hong Kong, Malaya, and especially the key base at Singapore. Japan then marched into Burma, headed toward India. Churchill's reaction to the entry of the United States into the war was that Britain was now assured of victory and the future of the empire was safe, but the rapid defeats irreversibly harmed Britain's standing and prestige as an imperial power. The realisation that Britain could not defend them pushed Australia and New Zealand into permanent close ties with the United States.

### Postwar

Economically in dire straits in 1945 (saddled with debt and dealing with widespread destruction of its infrastructure), Britain systematically reduced its overseas commitments. It pursued an alternate role as an active participant in the Cold War against communism, especially as a founding member of NATO in 1949.
The British had built up a very large worldwide Empire, which peaked in size in 1922, after more than half a century of unchallenged global supremacy. The cumulative costs of fighting two world wars, however, placed a heavy burden upon the home economy, and after 1945 the British Empire rapidly began to disintegrate, with all the major colonies gaining independence. By the mid-to-late 1950s, the UK's status as a superpower was gone in the face of the United States and the Soviet Union. Most former colonies joined the "Commonwealth of Nations", an organisation of fully independent nations now with equal status to the UK. However it attempted no major collective policies. The last major colony, Hong Kong, was handed over to China in 1997. Fourteen British Overseas Territories maintain a constitutional link to the UK, but are not part of the country per se.
Britain slashed its involvements in the Middle East after the humiliating Suez Crisis of 1956. However Britain did forge close military ties with the United States, France, and Germany, through the NATO military alliance. After years of debate (and rebuffs), Britain joined the Common Market in 1973; which became the European Union in 1993. However it did not merge financially, and kept the pound separate from the Euro, which partly isolated it from the EU financial crisis of 2011. In June 2016, the UK voted to leave the EU.

### 21st century

Foreign policy initiatives of UK governments since the 1990s have included military intervention in conflicts and for peacekeeping, humanitarian assistance programmes and increased aid spending, support for establishment of the International Criminal Court, debt relief for developing countries, prioritisation of initiatives to address climate change, and promotion of free trade. The British approach has been described as "spread the right norms and sustain NATO".
Lunn et al. (2008) argue:
    Three key motifs of Tony Blair's 10-year premiership were an activist philosophy of 'interventionism', maintaining a strong alliance with the US and a commitment to placing Britain at the heart of Europe. While the 'special relationship' and the question of Britain's role in Europe have been central to British foreign policy since the Second World War...interventionism was a genuinely new element.
The GREAT campaign of 2012 was one of the most ambitious national promotion efforts ever undertaken by any major nation. It was scheduled take maximum advantage of the worldwide attention to the Summer Olympics in London. The goals were to make British more culture visible in order to stimulate trade, investment and tourism. The government partnered with key leaders in culture, business, diplomacy and education. The campaign unified many themes and targets, including business meetings; scholarly conventions; recreational vehicle dealers; parks and campgrounds; convention and visitors bureaus; hotels; bed and breakfast inns; casinos; and hotels.
In 2013, the government of David Cameron described its approach to foreign policy by saying:
    For any given foreign policy issue, the UK potentially has a range of options for delivering impact in our national interest. ... [W]e have a complex network of alliances and partnerships through which we can work.... These include – besides the EU – the UN and groupings within it, such as the five permanent members of the Security Council (the “P5”); NATO; the Commonwealth; the Organisation for Economic Cooperation and Development; the G8 and G20 groups of leading industrialised nations; and so on.
The UK began establishing air and naval facilities in the Persian Gulf, located in the United Arab Emirates, Bahrain and Oman in 2014–15. The Strategic Defence and Security Review 2015 highlighted a range of foreign policy initiatives of the UK government. Edward Longinotti notes how current British defence policy is grappling with how to accommodate two major commitments, to Europe and to an ‘east of Suez’ global military strategy, within a modest defence budget that can only fund one. He points out that Britain's December 2014 agreement to open a permanent naval base in Bahrain underlines its gradual re-commitment east of Suez. By some measures, Britain remains the second most powerful country in the world by virtue of its soft power and "logistical capability to deploy, support and sustain [military] forces overseas in large numbers." Although commentators have questioned the need for global power projection, the concept of “Global Britain” put forward by the Conservative government in 2019 signalled more military activity in the Middle East and Pacific, outside of NATO's traditional sphere of influence.
At the end of January 2020, the United Kingdom left the European Union, with a subsequent trade agreement with the EU in effect from 1 January 2021, setting out the terms of the UK-EU economic relationship and what abilities the Foreign, Commonwealth & Development Office can use in foreign relations related to trade.

## Diplomatic relations

British diplomatic relations date back to the 13th century. The United Kingdom has established diplomatic relations with all United Nations members, aside from Bhutan, in addition to 3 Non-UN member states: the Cook Islands, Holy See, and Kosovo. Moreover, the UK established official relations with the Sovereign Military Order of Malta on 9 October 2024. The following table lists the date from which diplomatic relations were established with foreign countries:
List of diplomatic relations of the United Kingdom :
| Country | Date |
| Portugal | 9 May 1386 |
| France | 1396 |
| Denmark | 25 October 1401 |
| Spain | 1505 |
| Russia | 24 August 1553 |
| Netherlands | 1 April 1603 |
| Sweden | 23 December 1653 |
| United States | 1 June 1785 |
| Iran | 4 January 1801 |
| Chile | 14 September 1823 |
| Peru | 10 October 1823 |
| Argentina | 2 February 1825 |
| Colombia | 18 April 1825 |
| Mexico | 26 December 1826 |
| Brazil | 17 August 1827 |
| Greece | 21 November 1828 |
| Belgium | 1 December 1830 |
| Uruguay | 21 February 1833 |
| Venezuela | 29 October 1834 |
| Guatemala | 12 July 1837 |
| Bolivia | 29 September 1840 |
| Ethiopia | 1841 |
| Costa Rica | 28 February 1848 |
| Honduras | 16 June 1849 |
| Liberia | 1 August 1849 |
| Dominican Republic | 6 March 1850 |
| Ecuador | 29 January 1853 |
| Paraguay | 4 March 1853 |
| Thailand | 18 April 1855 |
| Japan | 26 August 1858 |
| Nicaragua | 18 January 1859 |
| Italy | 13 April 1859 |
| Haiti | 13 May 1859 |
| Serbia | 7 February 1870 |
| Bulgaria | 23 July 1879 |
| Luxembourg | 27 November 1879 |
| Romania | 20 February 1880 |
| El Salvador | 1883 |
| Switzerland | 1891 |
| Cuba | 20 May 1902 |
| Norway | 6 November 1905 |
| Panama | 9 April 1908 |
| Australia | 22 January 1910 |
| Egypt | 19 December 1914 |
| Saudi Arabia | July 1916 |
| Finland | 28 March 1918 |
| Poland | 15 July 1919 |
| Czechia | 3 September 1919 |
| Austria | 8 November 1919 |
| Hungary | 22 May 1921 |
| Albania | 9 November 1921 |
| Afghanistan | 22 November 1921 |
| Ireland | 6 December 1922 |
| Turkey | 2 September 1924 |
| Canada | 1 July 1926 |
| South Africa | 10 March 1931 |
| Iraq | 4 October 1932 |
| New Zealand | March 1939 |
| Iceland | 8 May 1940 |
| Lebanon | 9 February 1942 |
| Syria | 9 February 1942 |
| Jordan | 17 June 1946 |
| Philippines | 4 July 1946 |
| Sri Lanka | 22 October 1946 |
| Myanmar | 7 July 1947 |
| India | 14 August 1947 |
| Nepal | 16 August 1947 |
| Pakistan | 14 August 1947 |
| South Korea | 18 January 1949 |
| Indonesia | 27 December 1949 |
| Israel | 28 April 1950 |
| Germany | 20 June 1951 |
| Yemen | 24 October 1951 |
| Libya | 24 December 1951 |
| Cambodia | 5 May 1952 |
| China | 17 June 1954 |
| Laos | 5 September 1955 |
| Sudan | 3 March 1956 |
| Tunisia | 19 June 1956 |
| Morocco | 28 June 1956 |
| Ghana | 6 March 1957 |
| Malaysia | 31 August 1957 |
| Guinea | 28 May 1959 |
| Cameroon | 1 February 1960 |
| Togo | 27 April 1960 |
| Madagascar | 27 June 1960 |
| Democratic Republic of the Congo | 7 July 1960 |
| Somalia | 7 July 1960 |
| Cyprus | 16 August 1960 |
| Senegal | 20 August 1960 |
| Nigeria | 1 October 1960 |
| Benin | 6 October 1960 |
| Burkina Faso | 6 October 1960 |
| Niger | 6 October 1960 |
| Ivory Coast | 12 October 1960 |
| Mauritania | 28 November 1960 |
| Chad | 9 December 1960 |
| Central African Republic | 9 December 1960 |
| Republic of the Congo | 9 December 1960 |
| Gabon | 9 December 1960 |
| Mali | 22 March 1961 |
| Sierra Leone | April 1961 |
| Kuwait | 8 October 1961 |
| Burundi | 1 July 1962 |
| Rwanda | 1 July 1962 |
| Jamaica | 2 August 1962 |
| Trinidad and Tobago | 31 August 1962 |
| Uganda | 9 October 1962 |
| Algeria | 16 November 1962 |
| Mongolia | 23 January 1963 |
| Kenya | 12 December 1963 |
| Tanzania | 22 April 1964 |
| Malawi | 6 July 1964 |
| Malta | 21 September 1964 |
| Zambia | 17 October 1964 |
| Gambia | 1 January 1965 |
| Maldives | 26 July 1965 |
| Singapore | 9 August 1965 |
| Guyana | 26 May 1966 |
| Botswana | 30 September 1966 |
| Barbados | 30 November 1966 |
| Lesotho | 4 October 1966 |
| Mauritius | 12 March 1968 |
| Eswatini | 6 September 1968 |
| Equatorial Guinea | 20 June 1969 |
| Tonga | 4 June 1970 |
| Samoa | September 1970 |
| Fiji | 10 October 1970 |
| Oman | 21 May 1971 |
| Bahrain | 21 August 1971 |
| United Arab Emirates | 6 December 1971 |
| Bangladesh | 4 February 1972 |
| Qatar | 24 May 1972 |
| Bahamas | 10 July 1973 |
| Vietnam | 11 September 1973 |
| Grenada | 7 February 1974 |
| Guinea-Bissau | 12 March 1975 |
| Mozambique | 1 September 1975 |
| Papua New Guinea | 16 September 1975 |
| Suriname | 31 March 1976 |
| Seychelles | 29 June 1976 |
| Cape Verde | 17 May 1977 |
| Comoros | 3 October 1977 |
| Angola | 14 October 1977 |
| Nauru | 1 December 1977 |
| Djibouti | 25 January 1978 |
| Solomon Islands | 7 July 1978 |
| Tuvalu | 1 October 1978 |
| Dominica | 13 December 1978 |
| Saint Lucia | 22 February 1979 |
| Kiribati | 12 July 1979 |
| Saint Vincent and the Grenadines | 27 October 1979 |
| São Tomé and Príncipe | 3 December 1979 |
| Zimbabwe | 18 April 1980 |
| Vanuatu | 30 July 1980 |
| Belize | 21 September 1981 |
| Antigua and Barbuda | 1 November 1981 |
| Holy See | 16 January 1982 |
| Saint Kitts and Nevis | 19 September 1983 |
| Brunei | 1 January 1984 |
| Namibia | 21 March 1990 |
| Lithuania | 4 September 1991 |
| Estonia | 5 September 1991 |
| Latvia | 5 September 1991 |
| Ukraine | 10 January 1992 |
| Slovenia | 15 January 1992 |
| Tajikistan | 15 January 1992 |
| Moldova | 17 January 1992 |
| Kazakhstan | 19 January 1992 |
| Armenia | 20 January 1992 |
| Turkmenistan | 23 January 1992 |
| Belarus | 27 January 1992 |
| Marshall Islands | 2 February 1992 |
| Liechtenstein | 6 February 1992 |
| Uzbekistan | 18 February 1992 |
| Azerbaijan | 11 March 1992 |
| Bosnia and Herzegovina | 13 April 1992 |
| Georgia | 27 April 1992 |
| Kyrgyzstan | 12 June 1992 |
| Croatia | 24 June 1992 |
| Federated States of Micronesia | 31 August 1992 |
| Slovakia | 1 January 1993 |
| Eritrea | 16 November 1993 |
| North Macedonia | 16 December 1993 |
| Andorra | 9 March 1994 |
| Palau | 16 August 1996 |
| San Marino | 18 November 1998 |
| North Korea | 12 December 2000 |
| Timor-Leste | 20 May 2002 |
| Montenegro | 13 June 2006 |
| Monaco | 21 September 2007 |
| Kosovo | 18 February 2008 |
| South Sudan | 9 July 2011 |

## Bilateral relations
### Africa

| Country | Since | Notes |
| Algeria | 1962 | See Foreign relations of Algeria |
| Angola | 1977 | See Foreign relations of Angola The UK established diplomatic relations with Angola on 14 October 1977. Angola maintains an embassy in London. The United Kingdom is accredited to Angola through its embassy in Luanda. Both countries share common membership of the Atlantic Co-operation Pact, and the World Trade Organization. Bilaterally the two countries have a High Level Prosperity Partnership. |
| Benin | 1960 | See Foreign relations of Benin The UK established diplomatic relations with Benin on 6 October 1960, then known as Dahomey. Benin does not maintain an embassy in the United Kingdom. The United Kingdom is not accredited to Benin through an embassy; the UK develops relations through its high commission in Accra, Ghana. Both countries share common membership of the Atlantic co-operation pact, the International Criminal Court, and the World Trade Organization. Bilaterally the two countries have an Investment Agreement. |
| Botswana | 1966 | See Botswana–United Kingdom relations The UK established diplomatic relations with Botswana on 30 September 1966. Botswana maintains a high commission in London. The United Kingdom is accredited to Botswana through its high commission in Gaborone. The UK governed Botswana from 1885 to 1966, when it achieved full independence. Both countries share common membership of the Commonwealth, the International Criminal Court, and the World Trade Organization, as well as the SACUM–UK Economic Partnership Agreement. |
| Burkina Faso | 1960 | See Foreign relations of Burkina Faso The UK established diplomatic relations with Burkina Faso on 6 October 1960, then known as Upper Volta. Burkina Faso does not maintain an embassy in the United Kingdom. The United Kingdom is not accredited to Burkina Faso through an embassy; the UK develops relations through its high commission in Accra, Ghana. Both countries share common membership of the International Criminal Court, and the World Trade Organization. |
| Burundi | 1962 | See Foreign relations of Burundi The UK established diplomatic relations with Burundi on 1 July 1962. Burundi maintains an embassy in London. The United Kingdom is accredited to Burundi through its embassy office in Bujumbura. Both countries share common membership of the World Trade Organization. |
| Cameroon | 1960 | See Foreign relations of Cameroon The UK established diplomatic relations with Cameroon on 1 February 1960. Cameroon maintains a high commission in London. The United Kingdom is accredited to Cameroon through its high commission in Yaoundé. The UK governed western Cameroon from 1916 to 1961, when it joined the Federal Republic of Cameroon. Both countries share common membership of the Commonwealth, and the World Trade Organization. Bilaterally the two countries have an Economic Partnership Agreement. |
| Central African Republic | 1960 | See Foreign relations of the Central African Republic The UK established diplomatic relations with the Central African Republic on 9 December 1960. The Central African Republic does not maintain an embassy in the UK. The United Kingdom is not accredited to the Central African Republic through an embassy; the UK develops relations through its embassy in Kinshasa, DR Congo. Both countries share common membership of the International Criminal Court, and the World Trade Organization. |
| Chad | 1960 | See Foreign relations of Chad The UK established diplomatic relations with Chad on 9 December 1960. Chad does not maintain an embassy in the UK. The United Kingdom is accredited to Chad through its embassy in N'Djamena. Both countries share common membership of the International Criminal Court, and the World Trade Organization. Bilaterally the two countries have a Development Partnership. |
| Democratic Republic of the Congo | 1960 | See Democratic Republic of the Congo–United Kingdom relations The UK established diplomatic relations with the Democratic Republic of the Congo on 7 July 1960. The Democratic Republic of the Congo maintains an embassy in London. The United Kingdom is accredited to the Democratic Republic of the Congo through its embassy in Kinshasa. Both countries share common membership of the International Criminal Court, and the World Trade Organization. Bilaterally the two countries have a Development Partnership. |
| Djibouti | 1978 | See Foreign relations of Djibouti The UK established diplomatic relations with Djibouti on 25 January 1978. Djibouti does not maintain an embassy in the UK. The United Kingdom is accredited to Djibouti through its embassy in Djibouti. Both countries share common membership of the International Criminal Court, and the World Trade Organization. |
| Egypt | 1922 | See Egypt–United Kingdom relations Bilaterally the two countries have a Development Partnership. |
| Equatorial Guinea | 1969 | See Foreign relations of Equatorial Guinea The UK established diplomatic relations with Equatorial Guinea on 20 June 1969. Equatorial Guinea closed its embassy in London. The United Kingdom is not accredited to Equatorial Guinea through an embassy. Both countries share common membership of the Atlantic co-operation pact. |
| Eritrea | 1993 | See Foreign relations of Eritrea The UK established diplomatic relations with Eritrea on 16 November 1993. Eritrea maintains an embassy in London. The United Kingdom is accredited to Eritrea through its embassy in Asmara. The UK administered Eritrea from 1941 to 1952, when Eritrea united with Ethiopia into a federation. |
| Eswatini | 1968 | See Foreign relations of Eswatini The UK established diplomatic relations with Eswatini on 6 September 1968. Eswatini maintains a high commission in London. The United Kingdom is accredited to Eswatini through its high commission in Mbabane. The UK governed Eswatini from 1903 to 1968, when it achieved full independence. Both countries share common membership of the Commonwealth and the World Trade Organization, as well as the SACUM–UK Economic Partnership Agreement. Bilaterally the two countries have an Investment Agreement. |
| Ethiopia | 1841 | See Ethiopia–United Kingdom relations The UK established diplomatic relations with Ethiopia in 1841. Ethiopia maintains an embassy in London. The United Kingdom is accredited to Ethiopia through its embassy in Addis Ababa. The UK administered Ethiopia from 1941 to 1942. The UK continued to administered the regions of Ogaden and Haud from 1941, until both territories were relinquished to Ethiopia in 1948 and 1955 respectively. Bilaterally the two countries have a Development Partnership, a Double Taxation Convention, and an Investment Agreement. |
| Gabon | 1960 | See Foreign relations of Gabon The UK established diplomatic relations with Gabon on 9 December 1960. Gabon maintains a high commission in London. The United Kingdom is accredited to Gabon through an honoury consul in Libreville. Both countries share common membership of the Atlantic co-operation pact, the Commonwealth, the International Criminal Court, and the World Trade Organization. |
| Ghana | 1957 | See Ghana–United Kingdom relations The UK established diplomatic relations with Ghana on 6 March 1957. Ghana maintains a high commission in London. The United Kingdom is accredited to Ghana through its high commission in Accra. The UK governed Ghana from 1821 to 1957, when it achieved full independence. Both countries share common membership of the Atlantic co-operation pact, the Commonwealth, the International Criminal Court, and the World Trade Organization. Bilaterally the two countries have a Development Partnership, an Economic Partnership Agreement, a High Level Prosperity Partnership, and an Investment Agreement. |
| Guinea | 1959 | See Foreign relations of Guinea The UK established diplomatic relations with Guinea on 28 May 1959. Guinea maintains an embassy in London. The United Kingdom is accredited to Guinea through its embassy in Conakry. Both countries share common membership of the Atlantic Co-operation Pact, the International Criminal Court, and the World Trade Organization. |
| Guinea-Bissau | 1975 | See Foreign relations of Guinea-Bissau The UK established diplomatic relations with Guinea-Bissau on 12 March 1975. Guinea-Bissau does not maintain an embassy in the United Kingdom. The United Kingdom is not accredited to Guinea-Bissau through an embassy; the UK develops relations through its embassy in Dakar, Senegal. The UK governed parts of Guinea-Bissau from 1792 to 1870, when it was ceded to Portugal. Both countries share common membership of Atlantic Co-operation Pact, and the World Trade Organization. |
| Ivory Coast | 1960 | See Foreign relations of Ivory Coast The UK established diplomatic relations with Ivory Coast on 12 October 1960. Ivory Coast maintains an embassy in London. The United Kingdom is accredited to Ivory Coast through its embassy in Abidjan. Both countries share common membership of the Atlantic co-operation pact, the International Criminal Court, and the World Trade Organization. Bilaterally the two countries have an Economic Partnership Agreement, a High Level Prosperity Partnership, and an Investment Agreement. |
| Kenya | 1963 | See Kenya–United Kingdom relations The UK established diplomatic relations with Kenya on 12 December 1963. Kenya maintains a high commission in London. The United Kingdom is accredited to Kenya through its high commission in Nairobi. The UK governed Kenya from 1895 to 1963, when it achieved full independence. Both countries share common membership of the Commonwealth, the International Criminal Court, and the World Trade Organization. Bilaterally the two countries have an Economic Partnership Agreement, a Defence Cooperation Agreement, a Development Partnership, and an Investment Agreement. |
| Lesotho | 1966 | See Foreign relations of Lesotho The UK established diplomatic relations with Lesotho on 4 October 1966. Lesotho maintains a high commission in London. The United Kingdom is accredited to Lesotho through its high commission in Maseru. The UK governed Lesotho from 1884 to 1966, when it achieved full independence. Both countries share common membership of the Commonwealth and the World Trade Organization, as well as the SACUM–UK Economic Partnership Agreement. Bilaterally the two countries have an Investment Agreement. |
| Liberia | 1849 | See Liberia–United Kingdom relations The UK established diplomatic relations with Liberia on 1 August 1849. Liberia maintains an embassy in London. The United Kingdom is accredited to Liberia through its embassy in Monrovia. The United Kingdom was the first country to recognise the independence of Liberia in 1848. Both countries share common membership of the Atlantic co-operation pact, the International Criminal Court, and the World Trade Organization. Bilaterally the two countries have a Development Partnership. |
| Libya | 1951 | See Libya–United Kingdom relations The UK established diplomatic relations with Libya on 24 December 1951. Libya maintains an embassy in London. The United Kingdom is accredited to Libya through its embassy in Tripoli. The UK administered Libya from 1942 to 1951, when Libya gained full independence. Bilaterally the two countries have a Double Taxation Agreement, and have signed an Investment Agreement. |
| Madagascar | 1960 | See Foreign relations of Madagascar The UK established diplomatic relations with Madagascar on 27 June 1960. Madagascar maintains an embassy in London. The United Kingdom is accredited to Madagascar through its embassy in Antananarivo. The UK administered Madagascar from 1942 to 1943, when Madagascar was transferred to France. Both countries share common membership of the International Criminal Court, and the World Trade Organization, as well as the Eastern and Southern Africa–UK Economic Partnership Agreement. Bilaterally the two countries have a Development Partnership. |
| Malawi | 1964 | See Malawi–United Kingdom relations The UK established diplomatic relations with Malawi on 6 July 1964. Malawi maintains a high commission in London. The United Kingdom is accredited to Malawi through its high commission in Lilongwe. The UK governed Malawi from 1893 until 1964, when Malawi gained full independence. Both countries share common membership of the Commonwealth, the International Criminal Court, and the World Trade Organization. Bilaterally the two countries have a Development Partnership, and a Double Taxation Agreement. |
| Mali | 1961 | See Foreign relations of Mali The UK established diplomatic relations with Mali on 22 March 1961. Mali does not maintain an embassy in the United Kingdom. The United Kingdom is accredited to Mali through its embassy in Bamako. Both countries share common membership of the International Criminal Court, and the World Trade Organization. |
| Mauritania | 1960 | See Foreign relations of Mauritania The UK established diplomatic relations with Mauritania on 28 November 1960. Mauritania maintains an embassy in London. The United Kingdom is accredited to Mauritania through its embassy in Nouakchott. Both countries share common membership of the Atlantic co-operation pact, and the World Trade Organization. Bilaterally the two countries have a Development Partnership. |
| Morocco | 1956 | See Morocco–United Kingdom relations The UK established diplomatic relations with Morocco on 28 June 1956. Morocco maintains an embassy in London. The United Kingdom is accredited to Morocco through its embassy in Rabat. Bilateral relations between Morocco and the UK date back to the early 1200s. Both countries share common membership of the Atlantic co-operation pact, and the World Trade Organization. Bilaterally the two countries have an Association Agreement, and an Investment Agreement. |
| Mozambique | 1975 | See Mozambique–United Kingdom relations The UK established diplomatic relations with Mozambique on 1 September 1975. Mozambique maintains a high commission in London. The United Kingdom is accredited to Mozambique through its high commission in Maputo. Both countries share common membership of the Commonwealth, and the World Trade Organization, as well as the SACUM–UK Economic Partnership Agreement. Bilaterally the two countries have a Development Partnership, a High Level Prosperity Partnership, and an Investment Agreement. |
| Namibia | 1990 | See Namibia–United Kingdom relations The UK established diplomatic relations with Namibia in 1990. Namibia maintains a high commission in London. The United Kingdom is accredited to Namibia through its high commission in Windhoek. Both countries share common membership of the Commonwealth, the International Criminal Court, and the World Trade Organization, as well as the SACUM–UK Economic Partnership Agreement. |
| Niger | 1960 | See Foreign relations of Niger The UK established diplomatic relations with Niger on 6 October 1960. Niger maintains a consulate in the Milton Keynes. The United Kingdom is accredited to Niger through its embassy in Niamey. Both countries share common membership of the International Criminal Court, and the World Trade Organization. Bilaterally the two countries have a Development Partnership. |
| Nigeria | 1960 | See Nigeria–United Kingdom relations The UK established diplomatic relations with Nigeria on 1 October 1960. Nigeria maintains a high commission in London. The United Kingdom is accredited to Nigeria through its high commission in Abuja, and a deputy high commission in Lagos. The UK governed Nigeria from 1862 to 1960, when Nigeria achieved full independence. Both countries share common membership of the Commonwealth, the International Criminal Court, and the World Trade Organization. Bilaterally the two countries have a Development Partnership, a Double Taxation Agreement, an Enhanced Trade and Investment Partnership, an Investment Agreement, and a Security and Defence Partnership. |
| Republic of the Congo | 1960 | See Foreign relations of the Republic of the Congo The UK established diplomatic relations with the Republic of the Congo on 9 December 1960. The Republic of the Congo maintains an embassy in London. The United Kingdom is not accredited to the Republic of the Congo through an embassy; the UK develops relations through its embassy in Kinshasa, DR Congo. Both countries share common membership of the Atlantic co-operation pact, the International Criminal Court, and the World Trade Organization. Bilaterally the two countries have an Investment Agreement. |
| Rwanda | 1962 | See Rwanda–United Kingdom relations The UK established diplomatic relations with Rwanda on 1 July 1962. Rwanda maintains a high commission in London. The United Kingdom is accredited to Rwanda through its high commission in Kigali. Both countries share common membership of the Commonwealth, and the World Trade Organization. Bilaterally the two countries have a Development Partnership. |
| São Tomé and Príncipe | 1979 | See Foreign relations of São Tomé and Príncipe The UK established diplomatic relations with São Tomé and Príncipe on 3 December 1979. São Tomé and Príncipe does not maintain an embassy in the United Kingdom. The United Kingdom is not accredited to São Tomé and Príncipe through an embassy; the UK develops relations through its embassy in Luanda, Angola. Both countries share common membership of the Atlantic co-operation pact. |
| Senegal | 1960 | See Foreign relations of Senegal The UK established diplomatic relations with Senegal on 20 June 1960. Senegal maintains an embassy in London. The United Kingdom is accredited to Senegal through its embassy in Dakar. Both countries share common membership of the Atlantic Co-operation Pact, the International Criminal Court, and the World Trade Organization. Bilaterally the two countries have a Defence Cooperation Agreement, and an Investment Agreement. |
| Sierra Leone | 1961 | See Foreign relations of Sierra Leone The UK established diplomatic relations with Sierra Leone in April 1961. Sierra Leone maintains a high commission in London. The United Kingdom is accredited to Sierra Leone through its high commission in Freetown. Both countries share common membership of the Atlantic co-operation pact, the Commonwealth, the International Criminal Court, and the World Trade Organization. Bilaterally the two countries have an Investment Agreement. |
| Somalia | 1960 | See Somalia–United Kingdom relations The UK established diplomatic relations with Somalia on 7 July 1960. Somalia does not maintain an embassy in London. The United Kingdom is accredited to Somalia through its embassy in Mogadishu. The UK governed Somaliland from 1884–1940 and 1941–1960, Somaliland achieved full independence on 26 June 1960. The UK also administered the remaining territory of modern Somalia from 1941–1950, until it became an Italian Trust Territory. Both of these territories unified on the 1 July 1960 to become Somalia. Bilaterally the two countries have a Development Partnership. |
| Somaliland | N/A | See Somaliland–United Kingdom relations The UK has not established diplomatic relations with Somaliland; the UK does not recognise Somaliland to be a sovereign nation. Somaliland maintains a diplomatic mission in London. The United Kingdom does not have a diplomatic mission in Somaliland. On 4 July 2023, Gavin Williamson proposed a bill to the UK Parliament that would invoke the UK to recognise the Republic of Somaliland. The UK governed Somaliland from 1884–1940 and 1941–1960, Somaliland achieved full independence on 26 June 1960. The Republic of Somaliland declared independence from Somalia on 18 May 1991. |
| South Africa | 1931 | See South Africa–United Kingdom relations The UK established diplomatic relations with South Africa on 10 March 1931. South Africa maintains a high commission in London. The United Kingdom is accredited to South Africa through its high commission in Pretoria. The UK governed South Africa from 1806 until 1931, when South Africa gained full independence. Both countries share common membership of the Commonwealth, G20, the International Criminal Court, and the World Trade Organization, as well as the SACUM–UK Economic Partnership Agreement. Bilaterally the two countries have a Development Partnership. |
| South Sudan | 2011 | See Foreign relations of South Sudan The UK established diplomatic relations with South Sudan on 9 July 2011. South Sudan maintains a embassy in London. The United Kingdom is accredited to South Sudan through its embassy in Juba. The UK governed South Sudan from 1899 to 1956, when Sudan achieved full independence. Bilaterally the two countries have a Development Partnership. |
| Sudan | 1956 | See Sudan–United Kingdom relations The UK established diplomatic relations with Sudan on 3 March 1956. Sudan maintains an embassy in London. The United Kingdom is accredited to Sudan through its embassy in Khartoum. Due to the Battle of Khartoum, the embassy has been temporarily relocated to Addis Ababa, Ethiopia. The UK governed Sudan from 1899 to 1956, when Sudan achieved full independence. |
| Tanzania | 1964 | See Tanzania–United Kingdom relations The UK established diplomatic relations with Tanzania on 22 April 1964. Tanzania maintains a high commission in London. The United Kingdom is accredited to Tanzania through its high commission in Dar es Salaam. The UK governed Tanganyika from 1916 to 1961, when Tanganyika achieved full independence; the UK governed Zanzibar from 1890 to 1963, when Zanzibar achieved full independence. Both countries unified on 26 April 1964 to become Tanzania. Both countries share common membership of the Commonwealth, the International Criminal Court, and the World Trade Organization. Bilaterally the two countries have a Development Partnership, and a High Level Prosperity Partnership. |
| Togo | 1960 | See Foreign relations of Togo The UK established diplomatic relations with Togo on 27 April 1960. Togo maintains a high commission in London. The United Kingdom is not accredited to Togo through a high commission; the UK develops relations through its high commission in Accra, Ghana. The UK occupied Togo from 1914 to 1916, when Togo became a French mandate. Both countries share common membership of the Atlantic co-operation pact, the Commonwealth, and the World Trade Organization. |
| Tunisia | 1956 | See Foreign relations of Tunisia The UK established diplomatic relations with Tunisia on 19 June 1956. Tunisia maintains an embassy in London. The United Kingdom is accredited to Tunisia through its embassy in Tunis. Both countries share common membership of the International Criminal Court, and the World Trade Organization. Bilaterally the two countries have an Association Agreement, and an Investment Agreement. |
| Uganda | 1962 | See Uganda–United Kingdom relations The UK established diplomatic relations with Uganda on 9 October 1962. Uganda maintains a high commission in London. The United Kingdom is accredited to Uganda through its high commission in Kampala. The UK governed Uganda from 1894 to 1962, when Uganda achieved full independence. Both countries share common membership of the Commonwealth, the International Criminal Court, and the World Trade Organization. Bilaterally the two countries have a Development Partnership, and an Investment Agreement. |
| Zambia | 1964 | See United Kingdom–Zambia relations The UK established diplomatic relations with Zambia on 17 October 1964. Zambia maintains a high commission in London. The United Kingdom is accredited to Zambia through its high commission in Lusaka. The UK governed Zambia from 1911 to 1964, when Zambia achieved full independence. Both countries share common membership of the Commonwealth, the International Criminal Court, and the World Trade Organization. Bilaterally the two countries have a Development Partnership, a Double Taxation Agreement, an Energy Africa Partnership Agreement, a Green Growth Compact, and have signed an Investment Agreement. |
| Zimbabwe | 1980 | See United Kingdom–Zimbabwe relations The UK established diplomatic relations with Zimbabwe on 18 April 1980. Zimbabwe maintains an embassy in London. The United Kingdom is accredited to Zimbabwe through its embassy in Harare. The UK governed Zimbabwe from 1923 to 1980, when Zimbabwe achieved full independence. Both countries share common membership of the World Trade Organization, as well as the Eastern and Southern Africa–UK Economic Partnership Agreement. Bilaterally the two countries have a Development Partnership, a Double Taxation Agreement, and have signed an Investment Agreement. |

### Asia

| Country | Since | Notes |
| Afghanistan | 1921 | See Afghanistan–United Kingdom relations The UK established diplomatic relations with Afghanistan on 22 November 1921. The UK currently recognises the Islamic Republic of Afghanistan government, over the de facto Islamic Emirate of Afghanistan government, as the legal administrator of the country. Afghanistan maintains an embassy in London. The United Kingdom was accredited to Afghanistan through its embassy in Kabul. Following the fall of Kabul, the embassy has been co-located with the British Embassy in Doha, Qatar. The UK governed Afghanistan from 1879–1919, when Afghanistan achieved full independence. Both countries share common membership of the International Criminal Court, and the World Trade Organization. Bilaterally the two countries have a Development Partnership. |
| Armenia | 1992 | See Armenia–United Kingdom relations The UK established diplomatic relations with Armenia on 20 January 1992. Armenia maintains an embassy in London. The United Kingdom is accredited to Armenia through its embassy in Yerevan. Both countries share common membership of the Council of Europe, European Court of Human Rights, the International Criminal Court, OSCE, and the World Trade Organization. Bilaterally the two countries have an Investment Agreement. |
| Azerbaijan | 1992 | See Azerbaijan–United Kingdom relations The UK established diplomatic relations with Azerbaijan on 11 March 1992. Azerbaijan maintains an embassy in London. The United Kingdom is accredited to Azerbaijan through its embassy in Baku. Both countries share common membership of the Council of Europe, European Court of Human Rights, and the OSCE. Bilaterally the two countries have a Double Taxation Agreement, and an Investment Agreement. |
| Bahrain | 1971 | See Bahrain–United Kingdom relations The UK established diplomatic relations with Bahrain on 21 August 1971. Bahrain maintains an embassy in London. The United Kingdom is accredited to Bahrain through its embassy in Manama. The UK governed Bahrain from 1861 to 1971, when it achieved full independence. Both countries share common membership of the World Trade Organization. The UK and the Gulf Cooperation Council, of which Bahrain is a member, are negotiating a free trade agreement. |
| Bangladesh | 1972 | See Bangladesh–United Kingdom relations The UK established diplomatic relations with Bangladesh on 4 February 1972. Bangladesh maintains a high commission in London. The United Kingdom is accredited to Bangladesh through its high commission in Dhaka. The UK governed Bangladesh from 1699 to 1947, when it achieved independence as part of Pakistan. Both countries share common membership of the Commonwealth, the International Criminal Court, and the World Trade Organization. Bilaterally the two countries have a Development Partnership, a Double Taxation Convention, an Investment Agreement, and an Illegal Migration Returns Agreement. |
| Bhutan | N/A | See Foreign relations of Bhutan The UK has not established diplomatic relations with Bhutan; the UK does recognise Bhutan to be a sovereign nation. The UK is accredited to Bhutan through its deputy high commission in Kolkata, India. Relations between Bhutan and the UK date back to the 18th Century |
| Brunei | 1984 | See Brunei–United Kingdom relations The UK established diplomatic relations with Brunei in January 1984. Brunei maintains a high commission in London. The United Kingdom is accredited to Brunei through its high commission in Bandar Seri Begawan. The UK governed the Brunei from 1888 to 1984, when Brunei achieved full independence. Both countries share common membership of the Commonwealth, CPTPP, and the World Trade Organization. Bilaterally the two countries have a Double Taxation Agreement, and a Joint Defence Commission. |
| Cambodia | 1952 | See Cambodia–United Kingdom relations The UK established diplomatic relations with Cambodia on 5 May 1952. Cambodia maintains an embassy in London. The United Kingdom is accredited to Cambodia through its embassy in Phnom Penh. Both countries share common membership of the International Criminal Court, and the World Trade Organization. Bilaterally the two countries have a Development Partnership. |
| China | 1954 | See China–United Kingdom relations The UK established diplomatic relations with the People's Republic of China on 17 June 1954. China maintains an embassy in London. The United Kingdom is accredited to China through its embassy in Beijing, and consulate generals in Guangzhou, Hong Kong, and Shanghai. The UK governed the territories of Hong Kong, from 1841 to 1941 and 1945 to 1997, as well as Weihaiwei from 1898 to 1930. Both countries share common membership of the G20, the UNSC P5, and the World Trade Organization. Bilaterally the two countries have the Sino-British Joint Declaration. |
| Cyprus | 1960 | See Cyprus–United Kingdom relations The UK established diplomatic relations with Cyprus on 16 August 1960. The UK is a "guarantor power" of Cyprus's independence. Cyprus maintains a high commission in London, and honorary consulates in Belfast, Birmingham, Bristol, Dunblane, Glasgow, and Leeds. The United Kingdom is accredited to Cyprus through its high commission in Nicosia. The UK governed Cyprus from 1878 until 1960, when it achieved full independence. Both countries share common membership of the Commonwealth, the Council of Europe, European Court of Human Rights, the International Criminal Court, the OSCE, and the World Trade Organization. Bilaterally the two countries have a Double Taxation Agreement. |
| Georgia | 1992 | See Georgia–United Kingdom relations The UK established diplomatic relations with Georgia on 27 April 1992. Georgia maintains an embassy in London. The United Kingdom is accredited to Georgia through its embassy in Tbilisi. Both countries share common membership of the Council of Europe, European Court of Human Rights, the International Criminal Court, OSCE, and the World Trade Organization. Bilaterally the two countries have and an Investment Agreement, and a Strategic Partnership and Cooperation Agreement. |
| Hong Kong | N/A | See Hong Kong–United Kingdom relations The UK established modern diplomatic relations with Hong Kong on 1 July 1997. Hong Kong is represented through its Economic and Trade Office in London. The United Kingdom is accredited to Hong Kong from its consulate general on Hong Kong Island. The UK governed Hong Kong from 1841 to 1941 and 1945 to 1997, when Hong Kong's sovereignty was ceded to the People's Republic of China in 1997. Both share common membership of the World Trade Organization. Bilaterally the two have an Investment Agreement. |
| India | 1947 | See India–United Kingdom relations The UK established diplomatic relations with India on 14 August 1947. India maintains a high commission in London. The United Kingdom is accredited to India through its high commission in New Delhi, as well as Deputy High Commissions in Ahmedabad, Bangalore, Chandigarh, Chennai, Hyderabad, Kolkata, Mumbai, and a Nationals Assistance Office in Goa. The UK governed the India from 1858 to 1947, when it achieved full independence. Both countries share common membership of the Commonwealth, G20, and the World Trade Organization. Bilaterally the two countries have a Development Partnership, and a Comprehensive Strategic Partnership. Additionally the two are negotiating a Free Trade Agreement and an Investment Agreement. |
| Indonesia | 1949 | See Indonesia–United Kingdom relations The UK established diplomatic relations with Indonesia on 27 December 1949. Indonesia maintains an embassy in London. The United Kingdom is accredited to Indonesia through its embassy in Jakarta, as well as an honorary consulate in Bali. The United Kingdom occupied Indonesia from 1811 to 1816 and 1945 to 1946, on both occasions Indonesia was transferred to the Netherlands. Both countries share common membership of the G20, and the World Trade Organization. Bilaterally the two countries have a Development Partnership, a Double Taxation Agreement, an Investment Agreement, and a Strategic Partnership. |
| Iran | 1801 | See Iran–United Kingdom relations The UK established diplomatic relations with Iran on 4 January 1801. Iran maintains an embassy in London. The United Kingdom is accredited to Iran through its embassy in Tehran. The UK governed southern Iran from 1941 until 1946. Both countries are parties of the Joint Comprehensive Plan of Action. Bilaterally the two countries have an Air Transport Agreement. |
| Iraq | 1932 | See Iraq–United Kingdom relations The UK established diplomatic relations with Iraq on 4 October 1932. Iraq maintains an embassy in London. The United Kingdom is accredited to Iraq through its embassy in Baghdad. The UK governed Iraq from 1921 until 1932, when it achieved full independence. Bilaterally the two countries have a Development Partnership, a Partnership and Cooperation Agreement, and a Strategic Partnership. |
| Israel | 1948 | See Israel–United Kingdom relations The UK established diplomatic relations with Israel in 1950. Israel maintains an embassy in London. The United Kingdom is accredited to Israel through its embassy in Tel Aviv. The UK governed Israel from 1921 until 1948, when it achieved full independence. Both countries share common membership of the OECD, and the World Trade Organization. Bilaterally the two countries have a Trade and Partnership Agreement, a Reciprocal Healthcare Agreement, and a Strategic Partnership. The two countries are currently negotiating a new Free Trade Agreement. |
| Japan | 1858 | See Japan–United Kingdom relations The UK established diplomatic relations with Japan on 26 August 1858. Japan maintains an embassy in London. The United Kingdom is accredited to Japan through its embassy in Tokyo. Both countries share common membership of CPTPP, the G7, the G20, the International Criminal Court, OECD, and the World Trade Organization. Bilaterally the two countries have a Comprehensive Economic Partnership Agreement, and a Reciprocal Access Agreement. |
| Jordan | 1946 | See Jordan–United Kingdom relations Bilaterally the two countries have a Development Partnership. |
| Kazakhstan | 1992 | See Kazakhstan–United Kingdom relations The United Kingdom opened an embassy in Kazakhstan in October 1992 and Kazakhstan opened an embassy in Britain in February 1996. Kazakhstan's relations with the West have greatly improved in the last few years as the Government has closely cooperated in the United States-led War on Terror. See also Counter-terrorism in Kazakhstan Britain is the third-largest foreign investor in Kazakhstan with British companies making up 14 per cent of foreign direct investment. Over 100 British companies do business in Kazakhstan. Bilaterally the two countries have a Development Partnership. |
| Kuwait | 1961 | See Foreign relations of Kuwait The UK established diplomatic relations with Kuwait on 8 November 1961. Kuwait maintains an embassy in London. The United Kingdom is accredited to Kuwait through its embassy in Kuwait City. The UK governed Kuwait from 1899 to 1961, when it achieved full independence. Both countries share common membership of the World Trade Organization. Bilaterally the two countries have signed an Investment Agreement. The UK and the Gulf Cooperation Council, of which Kuwait is a member, are negotiating a Free Trade Agreement. |
| Kyrgyzstan | 1992 | See Kyrgyzstan–United Kingdom relations The UK established diplomatic relations with Kyrgyzstan on 12 June 1992. Kyrgyzstan maintains an embassy in London. The UK is accredited to Kyrgyzstan through its embassy in Bishkek. Both countries share common membership of the OSCE, and the World Trade Organization. Bilaterally the two countries have a Development Partnership. |
| Laos | 1955 | See Foreign relations of Laos The UK established diplomatic relations with Laos on 5 September 1955. Laos maintains an embassy in London. The UK is accredited to Laos through its embassy in Vientiane. Both countries share common membership of the World Trade Organization. |
| Lebanon | 1942 | See Foreign relations of Lebanon Bilaterally the two countries have a Development Partnership. |
| Macao | N/A | See Foreign relations of Macao The UK established modern diplomatic relations with Macao on 20 December 1999. Macao does not maintain a diplomatic mission in the United Kingdom. The United Kingdom is not accredited to Macao through a diplomatic mission; the UK develops relations through its Consulate General in Hong Kong. Both share common membership of the World Trade Organization. |
| Malaysia | 1957 | See Malaysia–United Kingdom relations The Yang di-Pertuan Agong in a carriage with Queen Elizabeth II of the United Kingdom on the state visit to London, 1974 The UK established diplomatic relations with Malaysia on 31 August 1957. Malaysia maintains a high commission in London. The United Kingdom is accredited to the Malaysia through its high commission in Kuala Lumpur. The UK governed the Malaysia from 1826 to 1942 and 1945 to 1957, when it achieved full independence. Both countries share common membership of the Commonwealth, CPTPP, the Five Power Defence Arrangements, and the World Trade Organization. Bilaterally the two countries have a Double Taxation Agreement, and an Investment Agreement. |
| Maldives | 1965 | See Foreign relations of the Maldives The UK established diplomatic relations with the Maldives on 26 July 1965. The Maldives maintains a high commission in London. The United Kingdom is accredited to the Maldives through its high commission in Malé. The UK governed the Maldives from 1796 to 1965, when it achieved full independence. Both countries share common membership of the Commonwealth, the International Criminal Court, and the World Trade Organization. The two countries are currently negotiating a free trade agreement. |
| Mongolia | 1963 | See Mongolia–United Kingdom relations The UK established diplomatic relations with Mongolia on 23 January 1963. Mongolia maintains an embassy in London. The United Kingdom is accredited to Monglia through its embassy in Ulaanbaatar. Both countries share common membership of the International Criminal Court, and the World Trade Organization. Bilaterally the two countries have an Air Services Agreement, a Development Partnership, a Double Taxation Agreement, and an Investment Agreement. |
| Myanmar | 1947 | See Myanmar–United Kingdom relations The UK established diplomatic relations with Myanmar on 7 July 1947. Myanmar maintains an embassy in London. The United Kingdom is accredited to Myanmar through its embassy in Yangon. The UK governed Myanmar from 1824 to 1942 and 1945 to 1948, when Myanmar achieved full independence. Both countries share common membership of the World Trade Organization. Bilaterally the two countries have a Development Partnership, and a Double Taxation Agreement. |
| Nepal | 16 August 1947 | See Nepal–United Kingdom relations The UK established diplomatic relations with Nepal on 16 August 1947. Nepal maintains an embassy in London. The United Kingdom is accredited to Nepal through its embassy in Kathmandu. Both countries share common membership of the World Trade Organization. Bilaterally the two countries have a Development Partnership, and an Investment Agreement. |
| North Korea | 2000 | See North Korea–United Kingdom relations The UK established diplomatic relations with North Korea on 12 December 2000. North Korea maintains an embassy in London. The United Kingdom is accredited to North Korea through its embassy in Pyongyang. |
| Oman | 1971 | See Oman–United Kingdom relations The UK established diplomatic relations with Oman on 21 May 1971. Oman maintains an embassy in London. The United Kingdom is accredited to Oman through its embassy in Muscat. The UK governed Oman from 1891 until 1951, when Oman achieved full independence. Both countries share common membership of the World Trade Organization. Bilaterally the two countries have a Comprehensive Agreement, a Double Taxation Agreement, an Investment Agreement, and a Mutual Defence Agreement. |
| Pakistan | 1947 | See Pakistan–United Kingdom relations The UK established diplomatic relations with Pakistan on 14 August 1947. Pakistan maintains a high commission in London, as well as consulates in Birmingham, Bradford, Glasgow, and Manchester. The United Kingdom is accredited to Pakistan through its high commission in Islamabad, as well as a deputy high commission in Karachi. The UK governed Pakistan from 1824 to 1947, as part of the British Raj which also included modern day India and Bangladesh, until it achieved full independence. Both countries share common membership of the Commonwealth, and the World Trade Organization. Bilaterally the two countries have a Development Partnership. |
| Palestine | N/A | See Palestine–United Kingdom relations The United Kingdom maintains a consulate in Jerusalem which handles British relations with the Palestinian Authority. The Foreign and Commonwealth Office states the "Consular district covers Jerusalem (West and East), the West Bank and Gaza. As well as work on the Middle East Peace Process and other political issues, the consulate also promotes trade between the UK and the Occupied Palestinian Territories and manages an extensive programme of aid and development work. The latter is undertaken primarily by the DFID office in Jerusalem.". The Palestinian Authority is represented in London by Manuel Hassassian, the Palestinian General Delegate to the United Kingdom. Both countries share common membership of the International Criminal Court. Bilaterally the two countries have a Development Partnership. |
| Philippines | 1946 | See Philippines–United Kingdom relations The UK established diplomatic relations with the Philippines on 4 July 1946. The Philippines maintains an embassy in London. The United Kingdom is accredited to the Philippines through its embassy in Manila. Both countries share common membership of the World Trade Organization. Bilaterally the two countries have an Investment Agreement. |
| Qatar | 1972 | See Qatar–United Kingdom relations The UK established diplomatic relations with Qatar on 24 May 1972. Qatar maintains an embassy in London. The United Kingdom is accredited to Qatar through its embassy in Doha. The UK governed Qatar from 1916 to 1971, when it achieved full independence. Both countries share common membership of the World Trade Organization. Bilaterally the two countries have a Climate Technology Partnership, a Security Pact, a Strategic Investment Partnership, and have signed an Investment Agreement. The UK and the Gulf Cooperation Council, of which Qatar is a member, are negotiating a free trade agreement. |
| Saudi Arabia | 1927 | See Saudi Arabia–United Kingdom relations The UK established diplomatic relations with Saudi Arabia on 20 May 1927. Saudi Arabia maintains an embassy in London. The United Kingdom is accredited to Saudi Arabia through its embassy in Riyadh, as well as a consulate general in Jeddah. Both countries share common membership of the World Trade Organization. Bilaterally the two countries have a Critical Minerals Partnership, a Defence Agreement, a Double Taxation Agreement, and a Strategic Partnership. Both countries are negotiating a Free Trade Agreement. |
| Singapore | 1965 | See Singapore–United Kingdom relations Singapore and the United Kingdom share a friendly relationship since Singapore became independent from the United Kingdom in 1959. Singapore retained the Judicial Committee of the Privy Council as the final court of appeal up till 1989 (fully abolished in 1994) due to political reasons. |
| South Korea | 1949 | See South Korea–United Kingdom relations The UK established diplomatic relations with South Korea on 18 January 1949. South Korea maintains an embassy in London. The United Kingdom is accredited to South Korea through its embassy in Seoul. Both countries share common membership of the G20, the International Criminal Court, OECD, and the World Trade Organization. Bilaterally the two countries have a Double Taxation Agreement, the Downing Street Accord, and a Free Trade Agreement. The two countries are negotiating a new Free Trade Agreement. |
| Sri Lanka | 1946 | See Sri Lanka–United Kingdom relations The UK established diplomatic relations with Sri Lanka on 22 October 1946. Sri Lanka maintains a high commission in London. The United Kingdom is accredited to Sri Lanka through its high commission in Colombo. The UK governed Sri Lanka from 1802 to 1948, until it achieved full independence as Ceylon. Both countries share common membership of the Commonwealth, and the World Trade Organization. Bilaterally the two countries have an Investment Agreement. |
| Syria | 1942 | See Syria–United Kingdom relations Bilaterally the two countries have a Development Partnership. |
| Taiwan | N/A | See Taiwan–United Kingdom relations The UK has not established formal diplomatic relations with Taiwan; the UK does not recognise Taiwan to be a sovereign nation. Taiwan maintains the Taipei Representative Office in London, in addition to a branch office in Edinburgh. The United Kingdom is accredited to Taiwan through its office in Taipei. In 1950, the UK switched its recognition from the Republic of China (ROC) to the People's Republic of China (PRC). Both countries share common membership of the World Trade Organization. |
| Tajikistan | 1992 | See Foreign relations of Tajikistan The UK established diplomatic relations with Tajikistan on 15 January 1992. Tajikistan maintains an embassy in London. The UK is accredited to Tajikistan embassy in Dushanbe. Both countries share common membership of the International Criminal Court, the OSCE, and the World Trade Organization. Bilaterally the two countries have a Development Partnership. |
| Thailand | 1855 | See Thailand–United Kingdom relations The UK established diplomatic relations with Thailand on 18 April 1855. Thailand maintains an embassy in London. The UK is accredited to Thailand through its embassy in Bangkok. Both countries share common membership of the World Trade Organization. |
| Timor-Leste | 2002 | See Foreign relations of Timor-Leste The UK established diplomatic relations with Timor-Leste on 20 May 2002. Timor-Leste maintains an embassy in London. The United Kingdom is accredited to Timor-Leste from its embassy in Jakarta; there is no British embassy in East Timor. On 29 February 2024, the UK announced its intentions to re-open an embassy in Dili. Both countries share common membership of the International Criminal Court, and the World Trade Organization. |
| Turkey | 1924 | See Turkey–United Kingdom relations The UK established diplomatic relations with Turkey on 2 September 1924. Turkey maintains an embassy in London, and consulates generals in Edinburgh, London and Manchester. The United Kingdom is accredited to Turkey through its embassy in Ankara, a consulate general in Istanbul, and an honorary vice consulate in Antalya. The United Kingdom also has a consulate in İzmir, and honorary consulates in Bodrum, Fethiye, and Marmaris. Both countries share common membership of the Council of Europe, G20, NATO, OECD, OSCE, and the World Trade Organization. Bilaterally the two countries have a Free Trade Agreement, and an Investment Agreement. |
| Turkmenistan | 1992 | See Foreign relations of Turkmenistan The UK established diplomatic relations with Turkmenistan on 23 January 1992. Turkmenistan maintains an embassy in London. The UK is accredited to Turkmenistan through its embassy in Ashgabat. Both countries share common membership of the OSCE. Bilaterally the two countries have a Development Partnership, and an Investment Agreement. |
| United Arab Emirates | 1971 | See United Arab Emirates–United Kingdom relations The UK established diplomatic relations with the United Arab Emirates on 6 December 1971. The United Arab Emirates maintains an embassy in London. The United Kingdom is accredited to the United Arab Emirates through its embassies in Abu Dhabi and Dubai. The UK governed the United Arab Emirates from 1920 to 1971, when the United Arab Emirates achieved full independence. Both countries share common membership of the World Trade Organization. Bilaterally the two countries have a Defence Cooperation Accord, an Investment Agreement, and a Partnership for the Future. The UK and the Gulf Cooperation Council, of which the United Arab Emirates is a member, are negotiating a Free Trade Agreement. |
| Uzbekistan | 1992 | See United Kingdom–Uzbekistan relations The UK established diplomatic relations with Uzbekistan on 18 February 1992. Uzbekistan maintains an embassy in London. The United Kingdom is accredited to Uzbekistan through its embassy in Tashkent. Both countries share common membership of the OSCE. Bilaterally the two countries have a Development Partnership, a Double Taxation Agreement, and a Partnership and Cooperation Agreement. |
| Vietnam | 1973 | See United Kingdom–Vietnam relations The UK established diplomatic relations with Vietnam on 11 September 1973. Vietnam maintains an embassy in London. The UK is accredited to Vietnam through its embassy in Hanoi, and a Consulate General in Ho Chi Minh City. The UK occupied Southern Vietnam and Saigon from 1945–1946. Both countries share common membership of CPTPP, and the World Trade Organization. Bilaterally the two countries have a Free Trade Agreement, an Investment Agreement, and a Strategic Partnership. |
| Yemen | 1951 | See United Kingdom–Yemen relations The UK established diplomatic relations with Yemen on 24 October 1951. Yemen maintains an embassy in London. The United Kingdom is accredited to Yemen through its embassy in Sana'a. The UK governed the southern Yemen from 1837 to 1967, when it achieved full independence as South Yemen. Both countries share common membership of the World Trade Organization. Bilaterally the two countries have a Development Partnership, and an Investment Agreement. |

### Europe

| Country | Since | Notes |
| Albania | 1921 | See Albania–United Kingdom relations The UK established diplomatic relations with Albania on 9 November 1921. Albania maintains an embassy in London. The United Kingdom is accredited to Albania through its embassy in Tirana. Both countries share common membership of the Council of Europe, European Court of Human Rights, the International Criminal Court, NATO, OSCE, and the World Trade Organization. Bilaterally the two countries have a Double Taxation Agreement, an Investment Agreement, a Partnership, Trade and Cooperation Agreement, a Readmission Agreement, and an Agreement on the Transfer of Sentenced Persons. |
| Andorra | 1994 | See Foreign relations of Andorra The United Kingdom's consulate-general in Barcelona handles the United Kingdom's consular activities in Andorra. |
| Austria | 1799 | See Austria–United Kingdom relations Austria has an embassy in London and 4 honorary consulates (in Manchester, Edinburgh, Grand Cayman and Hamilton). The United Kingdom has an embassy in Vienna and 4 honorary consulates in Bregenz, Graz, Innsbruck, and Salzburg. |
| Belarus | 1992 | See Belarus–United Kingdom relations The UK established diplomatic relations with Belarus on 27 January 1992. Belarus maintains an embassy in London. The United Kingdom is accredited to Belarus through its embassy in Minsk. Both countries share common membership of the OSCE. Bilaterally the two countries have a Double Taxation Agreement, and an Investment Agreement. |
| Belgium | 1830 | See Belgium–United Kingdom relations The UK established diplomatic relations with Belgium on 1 December 1830. Belgium maintains an embassy in London. The United Kingdom is accredited to Belgium through its embassy in Brussels. Both countries share common membership of the Atlantic Co-operation Pact, Council of Europe, European Court of Human Rights, the International Criminal Court, NATO, OECD, OSCE, and the World Trade Organization. Bilaterally the two countries have a Classified Information Protection Agreement, and a Maritime Cooperation Agreement. |
| Bosnia and Herzegovina | 1992 | See Bosnia and Herzegovina–United Kingdom relations The UK established diplomatic relations with Bosnia and Herzegovina on 13 April 1992. Bosnia and Herzegovina maintains an embassy in London. The United Kingdom is accredited to Bosnia and Herzegovina through its embassy in Sarajevo, and an embassy office in Banja Luka. Both countries share common membership of the Council of Europe, European Court of Human Rights, the International Criminal Court, and the OSCE. Bilaterally the two countries have an Investment Agreement, and a Reciprocal Healthcare Agreement. |
| Bulgaria | 1879 | See Bulgaria–United Kingdom relations The UK established diplomatic relations with Bulgaria on 23 July 1879. Bulgaria maintains an embassy in London. The United Kingdom is accredited to Bulgaria through its embassy in Sofia. Both countries share common membership of the Council of Europe, European Court of Human Rights, the International Criminal Court, NATO, OSCE, and the World Trade Organization. Bilaterally the two countries have an Investment Agreement, and a Strategic Partnership. |
| Croatia | 1992 | See Croatia–United Kingdom relations The UK established diplomatic relations with Croatia on 24 June 1992. Croatia maintains an embassy in London. The United Kingdom is accredited to Croatia through its embassy in Zagreb. Both countries share common membership of the Council of Europe, European Court of Human Rights, the International Criminal Court, NATO, OSCE, and the World Trade Organization. Bilaterally the two countries have a Double Taxation Agreement, and an Investment Agreement. |
| Czechia | 1993 | See Czechia–United Kingdom relations The UK established diplomatic relations with Czechia on 3 September 1919. Czechia maintains an embassy in London. The United Kingdom is accredited to Czechia through its embassy in Prague. Both countries share common membership of the Council of Europe, European Court of Human Rights, the International Criminal Court, NATO, OSCE, and the World Trade Organization. Bilaterally the two countries have an Investment Agreement. |
| Denmark | 1401 | See Denmark–United Kingdom relations The UK established diplomatic relations with Denmark on 25 October 1401. Denmark maintains an embassy in London. The United Kingdom is accredited to Denmark through its an embassy in Copenhagen. Both countries share common membership of the Council of Europe, European Court of Human Rights, the International Criminal Court, Joint Expeditionary Force, NATO, OECD, OSCE, and the World Trade Organization. Bilaterally the two countries have a Double Taxation Agreement. The two countries have a sovereignty dispute over the Rockall Bank. |
| Estonia | 1991 | See Estonia–United Kingdom relations The UK re-established diplomatic relations with Estonia on 5 September 1991. Estonia maintains an embassy in London. The United Kingdom is accredited to Estonia through its embassy in Tallinn. Both countries share common membership of the Council of Europe, European Court of Human Rights, the International Criminal Court, Joint Expeditionary Force, NATO, OECD, OSCE, and the World Trade Organization. Bilaterally the two countries have a Defence Cooperation Agreement, and a Double Taxation Agreement. |
| European Union | N/A | See European Union–United Kingdom relations The UK was a founding member of the European Union on 1 November 1993; it seceded on 1 January 2021. Relations between the two are governed by the EU–UK Trade and Cooperation Agreement. Both the EU and the UK share common membership of the G7, G20, and the World Trade Organization. |
| Faroe Islands | N/A | See Foreign relations of the Faroe Islands The Faroe Islands maintains a representation in London. The United Kingdom is accredited to the Faroe Islands through its consulate in Tórshavn. The UK occupied Faroe Islands from 1940 until 1945, when the Faroe Islands were returned to Denmark. Bilaterally the two countries have a Double Taxation Agreement, and a Free Trade Agreement. |
| Finland | 1919 | See Finland–United Kingdom relations The UK established diplomatic relations with Finland on 28 March 1919. Finland maintains an embassy in London and honorary consulates in Aberdeen, Belfast, Birmingham, Bristol, Cardiff, Dover, Dundee, Edinburgh, Gibraltar, Glasgow, Hamilton, Harwich, Hull, Immingham, Leeds, Lerwick, Liverpool, Manchester, Middlesbrough, Newcastle-Upon-Tyne, Nottingham, Plymouth, Rochester, Sheffield, Southampton and St Helier. The United Kingdom has an embassy in Helsinki and honorary consulates in Åland, Jyväskylä, Kotka, Kuopio, Oulu, Rovaniemi, Turku, Tampere and Vaasa. Both countries share common membership of the Council of Europe, European Court of Human Rights, the International Criminal Court, Joint Expeditionary Force, NATO, OECD, OSCE, and the World Trade Organization. Bilaterally the two countries have a mutual defence agreement, and a strategic partnership agreement. |
| France | 1396 | See France–United Kingdom relations The UK established diplomatic relations with France in 1396. France maintains an embassy in London, and consulates general in London and Edinburgh. The United Kingdom is accredited to France through its embassy in Paris, and consulates in Bordeaux and Marseille. Both countries share common membership of the Council of Europe, European Court of Human Rights, G7, G20, the International Criminal Court, NATO, OECD, OSCE, and the World Trade Organization. Bilaterally the two countries have the Combined Joint Expeditionary Force, a Double Taxation Convention, and the Lancaster House Treaties. |
| Germany | 1951 | See Germany–United Kingdom relations The UK established diplomatic relations with the Federal Republic of Germany on 20 June 1951. Germany maintains an embassy in London. The United Kingdom is accredited to an embassy in Berlin, and consulates generals in Dusseldorf and Munich. Both countries share common membership of the Council of Europe, European Court of Human Rights, G7, G20, the International Criminal Court, NATO, OECD, OSCE, and the World Trade Organization. Bilaterally the two countries have the Trinity House Defence Agreement. |
| Greece | 1834 | See Greece–United Kingdom relations The UK established diplomatic relations with Greece on in 1834. Greece maintains an embassy in London, and honorary consulates in Belfast, Birmingham, Edinburgh, Gibraltar, Glasgow, and Leeds. The United Kingdom is accredited to Greece through its embassy in Athens, and vice consulates in Corfu, Crete, Rhodes, Thessaloniki, and Zakynthos. The UK governed the Ionian Islands from 1815 to 1864, when they were ceded to Greece. Both countries share common membership of the Council of Europe, European Court of Human Rights, the International Criminal Court, NATO, OECD, OSCE, and the World Trade Organization. Bilaterally the two countries have a Defence and Security Agreement, a Double Taxation Agreement, and a Strategic Bilateral Framework. |
| Holy See | 1982 | See Holy See–United Kingdom relations With the English Reformation, diplomatic links between London and the Holy See, which had been established in 1479, were interrupted in 1536 and again, after a brief restoration in 1553, in 1558. Formal diplomatic ties between the United Kingdom and the Holy See were restored in 1914 and raised to ambassadorial level in 1982. |
| Hungary | 1921 | See also Hungary–United Kingdom relations The UK established diplomatic relations with Hungary on 22 May 1921. Hungary maintains an embassy in London. The United Kingdom is accredited to Hungary through its embassy in Budapest. Both countries share common membership of the Council of Europe, European Court of Human Rights, the International Criminal Court, NATO, OECD, OSCE, and the World Trade Organization. |
| Iceland | 1940 | See Iceland–United Kingdom relations The UK established diplomatic relations with Iceland on 8 May 1940. Iceland maintains an embassy in London. The United Kingdom is accredited to Iceland through its embassy in Reykjavík. The UK occupied Iceland from 10 May 1940 until July 1941, when the United States assumed responsibility of the country. The two countries have a sovereignty dispute over the Rockall Bank. Both countries share common membership of the Atlantic Co-operation Pact, Council of Europe, European Court of Human Rights, Joint Expeditionary Force, the International Criminal Court, NATO, OECD, OSCE, and the World Trade Organization. Bilaterally the two countries have a Double Taxation Convention, and a Free Trade Agreement. |
| Ireland | 1922 | See Ireland–United Kingdom relations The UK established diplomatic relations with Ireland on 6 December 1922. Ireland maintains an embassy in London. The United Kingdom is accredited to Ireland through its an embassy in Dublin. The UK governed parts of Ireland from the 12th century until 1800, when it was incorporated into the United Kingdom. The Republic of Ireland achieved full independence on the 6 December 1922. The two countries have a sovereignty dispute over the Rockall Bank. Both countries share common membership of the Atlantic co-operation pact, Council of Europe, European Court of Human Rights, the International Criminal Court, OECD, OSCE, and the World Trade Organization. Bilaterally the two countries have a Common Travel Area, and the Good Friday Agreement. |
| Italy | 1859 | See Italy–United Kingdom relations The UK established diplomatic relations with Italy on 13 April 1859. Italy has an embassy in London, a consulate general in Edinburgh and a consulate in Manchester. The United Kingdom has an embassy in Rome, a consulate general in Milan and a consulate in Naples. Both countries share common membership of the Council of Europe, European Court of Human Rights, G7, G20, the International Criminal Court, NATO, OECD, OSCE and the World Trade Organization. |
| Kosovo | 2008 | See Kosovo–United Kingdom relations Kosovo has a Consular Mission in London. The United Kingdom has an embassy in Pristina. Bilaterally the two countries have a Reciprocal Healthcare Agreement. When Kosovo declared its independence from Serbia on 17 February 2008, the United Kingdom became one of the first countries to officially announce recognition of sovereign Kosovo on 18 February 2008. The United Kingdom has had an embassy in Pristina since 5 March 2008. Kosovo has an embassy in London since 1 October 2008. |
| Latvia | 1991 | See Foreign relations of Latvia The UK established diplomatic relations with Latvia on 5 September 1991. Latvia maintains an embassy in London. The United Kingdom is accredited to Latvia through its embassy in Riga. Both countries share common membership of the Council of Europe, European Court of Human Rights, the International Criminal Court, Joint Expeditionary Force, NATO, OECD, OSCE, and the World Trade Organization. |
| Lithuania | 1991 | See Lithuania–United Kingdom relations The UK established diplomatic relations with Lithuania on 4 September 1991. Lithuania maintains an embassy in London. The United Kingdom is accredited to Lithuania through its embassy in Vilnius. Both countries share common membership of the Council of Europe, European Court of Human Rights, the International Criminal Court, Joint Expeditionary Force, NATO, OECD, OSCE, and the World Trade Organization. Bilaterally the two countries have an Investment Agreement. |
| Luxembourg | 1879 | See Foreign relations of Luxembourg The UK established diplomatic relations with Luxembourg on 27 November 1879. Luxembourg maintains an embassy in London. The United Kingdom is accredited to Luxembourg through its embassy in Luxembourg City. Both countries share common membership of the Council of Europe, European Court of Human Rights, the International Criminal Court, NATO, OECD, OSCE, and the World Trade Organization. Bilaterally the two countries have a Double Taxation Convention. |
| Malta | 1964 | See Malta–United Kingdom relations The UK established diplomatic relations with Malta on 7 September 1964. Malta maintains a high commission in London. The United Kingdom is accredited to Malta through its high commission in Valletta. The UK governed Malta from 1800 until 1964, when it achieved full independence. Both countries share common membership of the Commonwealth, the Council of Europe, European Court of Human Rights, the International Criminal Court, the OSCE, and the World Trade Organization. Bilaterally the two countries have a Bilateral Cooperation Framework. |
| Moldova | 1992 | See Moldova–United Kingdom relations The UK established diplomatic relations with Moldova on 17 January 1992. Moldova maintains an embassy in London. The United Kingdom is accredited to Moldova through its embassy in Chişinău. Both countries share common membership of the Council of Europe, European Court of Human Rights, the International Criminal Court, OSCE, and the World Trade Organization. Bilaterally the two countries have a Development Partnership, and a Strategic Partnership, Trade and Cooperation Agreement. |
| Monaco | 2007 | See Foreign relations of Monaco The UK established diplomatic relations with Monaco on 21 September 2007. Monaco maintains an embassy in London. The United Kingdom is not accredited to Monaco through an embassy; the UK develops relations through its embassy in Paris, France. Both countries share common membership of the Council of Europe, European Court of Human Rights, and the OSCE. |
| Montenegro | 2006 | See Montenegro–United Kingdom relations The UK established diplomatic relations with Montenegro on 13 June 2006. Montenegro maintains an embassy in London. The United Kingdom is accredited to Montenegro through its embassy in Podgorica. Both countries share common membership of the Council of Europe, European Court of Human Rights, the International Criminal Court, NATO, OSCE, and the World Trade Organization. Bilaterally the two countries have a Reciprocal Healthcare Agreement. |
| Netherlands | 1603 | See Netherlands–United Kingdom relations The UK established diplomatic relations with the Netherlands on 1 April 1603. The Netherlands maintains an embassy in London. The United Kingdom is accredited to the Netherlands through its embassy in The Hague. Both countries share common membership of the Atlantic Co-operation Pact, Council of Europe, European Court of Human Rights, the International Criminal Court, Joint Expeditionary Force, NATO, OECD, OSCE, and the World Trade Organization. |
| North Macedonia | 1993 | See North Macedonia–United Kingdom relations The UK established diplomatic relations with North Macedonia on 16 December 1993. North Macedonia maintains an embassy in London. The United Kingdom is accredited to North Macedonia through its embassy in Skopje. Both countries share common membership of the Council of Europe, European Court of Human Rights, the International Criminal Court, NATO, OSCE, and the World Trade Organization. Bilaterally the two countries have a Partnership, Trade and Cooperation Agreement. |
| Norway | 1905 | See Norway–United Kingdom relations The UK established diplomatic relations with Norway on 6 November 1905. Norway maintains an embassy in London, and an honoury consulate general in Edinburgh. The United Kingdom is accredited to Norway through its embassy in Oslo. Both countries share common membership of the Atlantic Co-operation Pact, Council of Europe, European Court of Human Rights, the International Criminal Court, Joint Expeditionary Force, NATO, OECD, OSCE, and the World Trade Organization. Bilaterally the two countries have a free trade agreement, a Green Partnership, and a Strategic Partnership. |
| Poland | 1919 | See Poland–United Kingdom relations The UK established diplomatic relations with Poland on 15 July 1919. Poland maintains an embassy in London. The United Kingdom is accredited to Poland through its embassy in Warsaw. Both countries share common membership of the Council of Europe, European Court of Human Rights, the International Criminal Court, NATO, OECD, OSCE, Trilateral Security Pact, and the World Trade Organization. Bilaterally the two countries have a Defence and Security Agreement, a Double Tax Convention, and a Strategic Partnership. |
| Portugal | 1386 | See Portugal–United Kingdom relations The UK established diplomatic relations with Portugal on 9 May 1386. Portugal maintains an embassy and a consulate general in London and consulates in Belfast, Edinburgh, Hamilton and St Helier. The United Kingdom is accredited to Portugal through its embassy in Lisbon, and a vice consulate in Portimão. Both countries share common membership of the Atlantic co-operation pact, Council of Europe, European Court of Human Rights, the International Criminal Court, NATO, OECD, OSCE, and the World Trade Organization. Bilaterally the two countries have an Alliance. |
| Romania | 1880 | See Romania–United Kingdom relations The UK established diplomatic relations with Romania on 20 February 1880. Romania maintains an embassy in London, and consulate generals in Edinburgh and Manchester. Romania also maintains honorary consulates in Hirwaun, Leeds, Morpeth-Newcastle and Southampton. The United Kingdom is accredited to Romania through its embassy in Bucharest. Both countries share common membership of the Council of Europe, European Court of Human Rights, the International Criminal Court, NATO, OSCE, and the World Trade Organization. |
| Russia | 1553 | See Russia–United Kingdom relations The UK established diplomatic relations with Russia on 24 August 1553. Russia maintains an embassy in London. The United Kingdom is accredited to Russia through its embassy in Moscow, and a consulate in Yekaterinburg. In March 2022, the United Kingdom was added to Russia's unfriendly countries list. Both countries share common membership of the European Court of Human Rights, G20, the OSCE, and the UNSC P5. Bilaterally the two countries have an Investment Agreement. |
| San Marino | 1899 | See San Marino–United Kingdom relations San Marino has a consulate general in London. The United Kingdom has a consulate general to San Marino in Rome. |
| Serbia | 1870 | See Serbia–United Kingdom relations The UK established diplomatic relations with Serbia on 7 February 1870 Serbia maintains an embassy in London. The United Kingdom is accredited to Serbia through its embassy in Belgrade. Both countries share common membership of the Council of Europe, European Court of Human Rights, the International Criminal Court, and OSCE. Bilaterally the two countries have an Investment Agreement, a Partnership, Trade and Cooperation Agreement, and a Reciprocal Healthcare Agreement. |
| Slovakia | 1993 | See Slovakia–United Kingdom relations The UK established diplomatic relations with Slovakia on 1 January 1993. Slovakia maintains an embassy in London. The United Kingdom is accredited to Slovakia through its embassy in Bratislava. Both countries share common membership of the Council of Europe, European Court of Human Rights, the International Criminal Court, NATO, OECD, OSCE, and the World Trade Organization. Bilaterally the two countries have a Double Taxation Convention. |
| Slovenia | 1992 | See Slovenia–United Kingdom relations The UK established diplomatic relations with Slovenia on 15 January 1992. Slovenia maintains an embassy in London. The United Kingdom is accredited to Slovenia through its embassy in Ljubljana. Both countries share common membership of the Council of Europe, European Court of Human Rights, the International Criminal Court, NATO, OECD, OSCE, and the World Trade Organization. Bilaterally the two countries have a Double Taxation Convention, and an Investment Agreement. |
| Sovereign Military Order of Malta | 2024 | See Foreign relations of the Sovereign Military Order of Malta The UK established official relations with Sovereign Military Order of Malta on 7 September 1964. The Sovereign Military Order of Malta maintains the Grand Priory of England in London. The United Kingdom is not accredited to the Sovereign Military Order of Malta through a mission. |
| Spain | 1505 | See Spain–United Kingdom relations The UK established diplomatic relations with Spain in 1505. Spain maintains an embassy in London. The United Kingdom is accredited to Spain through its embassy in Madrid, a consulate general Barcelona, and consulates in Alicante, Ibiza, Las Palmas, Málaga, Palma de Mallorca, and Santa Cruz de Tenerife. Both countries share common membership of the Atlantic Co-operation Pact, the Council of Europe, the European Court of Human Rights, the International Criminal Court, NATO, the OECD, the OSCE, and the World Trade Organization. Bilaterally the two countries have a Double Taxation Convention. |
| Sweden | 1653 | See Sweden–United Kingdom relations Sweden has an embassy in London as well as consulates general in Edinburgh and Gibraltar. Sweden also has consulates in Guernsey and Jersey as well as honorary consulates in Belfast, Birmingham, Brighton, Bristol, Cardiff, Dover, Glasgow, Immingham, Lerwick, Liverpool, Manchester, Newcastle upon Tyne, Southampton and Stornonway. The United Kingdom has an embassy in Stockholm and honorary consulates in Gothenburg and Malmö. Both countries are members of the Council of Europe, Joint Expeditionary Force, and NATO. |
| Switzerland | 1891 | See Switzerland–United Kingdom relations The UK established diplomatic relations with Switzerland in 1891. Switzerland maintains an embassy in London, an honorary consulate general in Edniburgh, and honory consulates in Belfast, Bermuda, Cardiff, the Cayman Islands, Gibraltar, and Manchester. The United Kingdom is accredited to Switzerland through its embassy in Bern. Both countries share common membership of the Council of Europe, European Court of Human Rights, the International Criminal Court, OECD, OSCE, and the World Trade Organization. Bilaterally the two countries have the Berne Financial Services Agreement, a Double Taxation Convention, and a Trade Agreement. The two countries are currently negotiating a Free Trade Agreement. |
| Ukraine | 1992 | See Ukraine–United Kingdom relations The UK established diplomatic relations with Ukraine on 10 January 1992. Ukraine maintains an embassy in London, and a consulate in Edinburgh. The United Kingdom is accredited to Ukraine through its embassy in Kyiv. Both countries share common membership of the Council of Europe, European Court of Human Rights, OSCE, Trilateral Security Pact, and the World Trade Organization. Bilaterally the two countries have a Development Partnership, a Security Agreement, and a Political, Free Trade and Strategic Partnership Agreement. |

### North America

| Country | Since | Notes |
| Antigua and Barbuda | 1981 | See Antigua and Barbuda–United Kingdom relations The UK established diplomatic relations with Antigua and Barbuda on 1 November 1981. Both countries are Commonwealth Realms. Antigua and Barbuda maintains a high commission in London. United Kingdom is accredited to Antigua and Barbuda through its high commission in Saint John's. The UK governed Antigua and Barbuda from 1632 to 1981, when Antigua and Barbuda achieved full independence. Both countries share common membership of the Caribbean Development Bank, the Commonwealth, the International Criminal Court, and the World Trade Organization, as well as the UK–CARIFORUM continuity Trade Agreement. |
| Bahamas | 1973 | See Foreign relations of the Bahamas The UK established diplomatic relations with the Bahamas on 10 July 1973. The Bahamas maintains a high commission in London. The United Kingdom is accredited to the Bahamas through its high commission in Nassau. The UK governed the Bahamas from 1648 to 1973, when the Bahamas achieved full independence. Both countries share common membership of the Caribbean Development Bank, the Commonwealth, the International Criminal Court, and the World Trade Organization, as well as the CARIFORUM–UK Economic Partnership Agreement. Bilaterally the two countries have a Tax Information Exchange Agreement. |
| Barbados | 1966 | See Barbados–United Kingdom relations The UK established diplomatic relations with Barbados on 30 November 1966. Barbados maintains a high commission in London. The United Kingdom is accredited to Barbados through its high commission in Bridgetown. The UK governed Barbados from 1625 to 1966, when Barbados achieved full independence. Both countries share common membership of the Caribbean Development Bank, the Commonwealth, the International Criminal Court, and the World Trade Organization, as well as the CARIFORUM–UK Economic Partnership Agreement. Bilaterally the two countries have an Investment Agreement. |
| Belize | 1981 | See Belize–United Kingdom relations The UK established diplomatic relations with Belize on 21 September 1981. Both countries are Commonwealth Realms. Belize maintains a high commission in London. The United Kingdom is accredited to Belize from its high commission in Belmopan. The UK governed Belize from 1783 to 1981, when Belize achieved full independence. Both countries share common membership of the Atlantic Co-operation Pact, Caribbean Development Bank, the Commonwealth, the International Criminal Court, and the World Trade Organization, as well as the CARIFORUM–UK Economic Partnership Agreement. Bilaterally the two countries have a Defence Cooperation Agreement, and an Investment Agreement. |
| Canada | 1926 | See Canada–United Kingdom relations The UK established diplomatic relations with Canada on 1 July 1926. Both countries are Commonwealth Realms. Canada maintains a high commission in London. The United Kingdom is accredited to Canada through its high commission in Ottawa, and consulate generals in Calgary, Montreal, Toronto, and Vancouver. The UK governed Canada from 1783 to 1931, when Canada achieved full independence. Both countries share common membership of the Atlantic co-operation pact, Commonwealth, CPTPP, Five Eyes, the G7, the G20, the International Criminal Court, NATO, OECD, OSCE, UKUSA Agreement, and the World Trade Organization. Bilaterally the two countries have a Double Taxation Agreement, and a Trade Continuity Agreement. |
| Cuba | 1902 | See Cuba–United Kingdom relations The UK established diplomatic relations with Cuba on 20 May 1902. Cuba maintains an embassy in London. United Kingdom is accredited to Cuba from its embassy in Havana. Both countries share common membership of the World Trade Organization. Bilaterally the two countries have an Investment Agreement, and a Political Dialogue and Co-operation Agreement. |
| Dominica | 1978 | See Foreign relations of Dominica The UK established diplomatic relations with Dominica on 13 December 1978. Dominica maintains a high commission in London. United Kingdom is not accredited to Dominica through a high commission; the UK develops relations through its high commission in Bridgetown. The UK governed Dominica from 1763 to 1978, when Dominica achieved full independence. Both countries share common membership of the Atlantic co-operation pact, Caribbean Development Bank, the Commonwealth, the International Criminal Court, and the World Trade Organization, as well as the UK–CARIFORUM continuity Trade Agreement. |
| Dominican Republic | 1850 | See Foreign relations of the Dominican Republic The UK established diplomatic relations with the Domican Republic on 6 March 1850. Dominican Republic maintains an embassy in London. The United Kingdom is accredited to Dominican Republic from its embassy in Santo Domingo. Both countries share common membership of the Atlantic co-operation pact, the International Criminal Court, and the World Trade Organization, as well as the CARIFORUM–UK Economic Partnership Agreement. Bilaterally the two countries have a Maritime Boundary Agreement. |
| El Salvador | 1883 | See El Salvador–United Kingdom relations The UK established diplomatic relations with El Salvador in 1883. El Salvador maintains an embassy in London. The United Kingdom is accredited to El Salvador from its embassy in San Salvador. Both countries share common membership of the International Criminal Court, and the World Trade Organization, as well as the Central America–UK Association Agreement. Bilaterally the two countries have an Investment Agreement. |
| Grenada | 1974 | See Grenada–United Kingdom relations |
| Guatemala | 1837 | See Foreign relations of Guatemala The UK established diplomatic relations with Guatemala on 12 July 1837. Guatemala maintains an embassy in London. United Kingdom is accredited to Guatemala from its embassy in Guatemala City. Both countries share common membership of the Atlantic co-operation pact, the International Criminal Court, and the World Trade Organization, as well as the Central America–UK Association Agreement. |
| Haiti | 1859 | See Haiti–United Kingdom relations The UK established diplomatic relations with Haiti on 13 May 1859. Haiti maintains an embassy in London. The United Kingdom is accredited to Haiti from its embassy in Port-au-Prince. Both countries share common membership of the World Trade Organization. Bilaterally the two countries have an Investment Agreement. |
| Honduras | 1849 | See Foreign relations of Honduras The UK established diplomatic relations with Honduras on 16 June 1849. Honduras maintains an embassy in London. The United Kingdom is not accredited to Honduras through an embassy; the UK is accredited to Honduras through its embassy in Guatemala City. The UK governed the Mosquito Coast from 1638 to 1787 and 1816 to 1819. Both countries share common membership of the International Criminal Court, the World Trade Organization, as well as the Central America–UK Association Agreement. |
| Jamaica | 1962 | See Foreign relations of Jamaica The UK established diplomatic relations with Jamaica on 2 August 1962. Both countries are Commonwealth Realms. Jamaica maintains a high commission in London. United Kingdom is accredited to Jamaica through its high commission in Kingston. The UK governed Jamaica from 1655 to 1962, when Jamaica achieved full independence. Both countries share common membership of the Caribbean Development Bank, the Commonwealth, the International Criminal Court, and the World Trade Organization, as well as the CARIFORUM–UK Economic Partnership Agreement. Bilaterally the two countries have an Investment Agreement. |
| Mexico | 1826 | See Mexico–United Kingdom relations The UK established diplomatic relations with Mexico on 26 September 1826. Mexico maintains a high commission in London. The United Kingdom is accredited to Mexico through its embassy in Mexico City, and a consulate general in Cancún. Both countries share common membership of CPTPP, the G20, the International Criminal Court, OECD, and the World Trade Organization. Bilaterally the two countries have a Free Trade Agreement, and an Investment Agreement. |
| Nicaragua | 1859 | See Foreign relations of Nicaragua The UK established diplomatic relations with Nicaragua on 18 January 1859. Nicaragua maintains an embassy in London. The United Kingdom is accredited to Nicaragua from its embassy in San Jose, Costa Rica; there is no British embassy in Nicaragua. Both countries share common membership of the World Trade Organization, as well as the Central America–UK Association Agreement. Bilaterally the two countries have an investment agreement. |
| Panama | 1908 | See Foreign relations of Panama The UK established diplomatic relations with Panama on 9 April 1908. Panama maintains an embassy in London. The United Kingdom is accredited to Panama from its embassy in Panama City. Both countries share common membership of the International Criminal Court, and the World Trade Organization, as well as the Central America–UK Trade Continuity Agreement. Bilaterally the two countries have an investment agreement. |
| Saint Kitts and Nevis | 1983 | See Saint Kitts and Nevis–United Kingdom relations The UK established diplomatic relations with Saint Kitts and Nevis on 19 September 1983. Both countries are Commonwealth Realms. Saint Kitts and Nevis maintains a high commission in London. The United Kingdom is accredited to Saint Kitts and Nevis from its high commission in Bridgetown; there is no British high commission in Saint Kitts and Nevis. The UK governed Saint Kitts and Nevis from the 17th century to 1983, when Saint Kitts and Nevis achieved full independence. Both countries share common membership of the Caribbean Development Bank, the Commonwealth, the International Criminal Court, and the World Trade Organization, as well as the CARIFORUM–UK Economic Partnership Agreement. |
| Saint Lucia | 1979 | See Foreign relations of Saint Lucia The UK established diplomatic relations with Saint Lucia on 22 February 1979. Both countries are Commonwealth Realms. Saint Lucia maintains a high commission in London. The United Kingdom is accredited to its high commission in Castries. The UK governed Saint Lucia from 1803 to 1979, when Saint Lucia achieved full independence. Both countries share common membership of the Caribbean Development Bank, Commonwealth, the International Criminal Court, the World Trade Organization, and the UK–CARIFORUM Continuity Trade Agreement. |
| Saint Vincent and the Grenadines | 1979 | See Saint Vincent and the Grenadines–United Kingdom relations The UK established diplomatic relations with Saint Vincent and the Grenadines on 27 October 1979. Both countries are Commonwealth Realms. Saint Vincent and the Grenadines maintains a high commission in London. The United Kingdom is accredited to its high commission in Kingstown. The UK governed Saint Vincent and the Grenadines as part of the Windward Islands colony from 1833 to 1979, when Saint Vincent and the Grenadines achieved full independence. Both countries share common membership of the Caribbean Development Bank, Commonwealth, the International Criminal Court, the World Trade Organization, and the CARIFORUM–UK Economic Partnership Agreement. |
| United States | 1783 | See United Kingdom–United States relations United States President Barack Obama talks to British Prime Minister David Cameron on the South Lawn of the White House, 20 July 2010. The UK established diplomatic relations with the United States on 1 June 1785. UK-US diplomatic relations is commonly described as the "Special Relationship". The United States maintains an embassy in London. The United Kingdom is accredited to its embassy in Washington, D.C. The United States declared its independence from the United Kingdom on 4 July 1776. Both countries share common membership of the Atlantic Co-operation Pact, AUKUS, Five Eyes, the G7, the G20, NATO, OECD, OSCE, UKUSA Agreement, the UNSC P5, and the World Trade Organization. Bilateral agreements between the two countries include the US–UK Mutual Defence Agreement, and a proposed free trade agreement. |

### Oceania

| Country | Since | Notes |
| Australia | 1936 | See Australia–United Kingdom relations The UK established diplomatic relations with Australia in March 1936. Both countries are Commonwealth Realms. Australia maintains a high commission in London. The United Kingdom is accredited to Australia through its high commission in Canberra, the UK also maintains consulate generals in Brisbane, Melbourne, and Sydney, additionally the United Kingdom maintains a consulate in Perth. The UK governed Australia from the late 18th century until 1942, when Australia achieved full independence. Both countries share common membership of AUKUS, the Commonwealth, CPTPP, Five Eyes, the Five Power Defence Arrangements, the G20, the International Criminal Court, OECD, the UKUSA Agreement, and the World Trade Organization. Bilaterally the two countries have a Climate and Energy Partnership, Defence Agreement, a Double Taxation Agreement, a Free Trade Agreement, and a Reciprocal Healthcare Agreement. |
| Fiji | 1970 | See Fiji–United Kingdom relations The UK established diplomatic relations with Fiji on 10 October 1970. Fiji maintains a high commission in London. The United Kingdom is accredited to Fiji through its high commission in Suva. The UK governed Fiji from 1874 until 1970, when Fiji achieved full independence. Both countries share common membership of the Commonwealth, the International Criminal Court, and the World Trade Organization, as well as the Pacific States–United Kingdom Economic Partnership Agreement. Bilaterally the two countries have a Double Taxation Convention. |
| Kiribati | 1979 | See Foreign relations of Kiribati The UK established diplomatic relations with Kiribati on 12 July 1979. Kiribati does not maintain a high commission in the United Kingdom. The United Kingdom is not accredited to Kiribati through a high commission; the UK develops relations through its high commission in Suva, Fiji. The UK governed Kiribati from 1892 until 1979, when Kiribati achieved full independence. Both countries share common membership of the Commonwealth, and the International Criminal Court. Bilaterally the two countries have a Double Taxation Agreement. |
| Marshall Islands | 1992 | See Foreign relations of the Marshall Islands The UK established diplomatic relations with the Marshall Islands on 2 February 1992. The Marshall Islands does not maintain an embassy in the United Kingdom. The United Kingdom is not accredited to the Marshall Islands through an embassy; the UK develops relations through its high commission in Suva, Fiji. Both countries share common membership of the International Criminal Court. Bilaterally the two countries have a Tax Information Exchange Agreement. |
| Nauru | 1968 | See Nauru–United Kingdom relations Nauru was part of the British Western Pacific Territories from September 1914 and June 1921. The British Government had ceased to exercise any direct role in the governance of Nauru by 1968, when the island achieved its independence. The Nauruan government maintains an Hon. Consul, Martin W I Weston. The British High Commission in Suva is responsible for the United Kingdom's bilateral relations with Nauru. |
| New Zealand | 1939 | See New Zealand–United Kingdom relations The UK established diplomatic relations with New Zealand in March 1939. Both countries are Commonwealth Realms. New Zealand maintains a high commission in London. The United Kingdom is accredited to New Zealand through its high commission in Wellington, in addition to a consulate general in Auckland. The UK governed New Zealand from 1840 until 1947, when New Zealand achieved full independence. Both countries share common membership of the Commonwealth, CPTPP, Five Eyes, the Five Power Defence Arrangements, the International Criminal Court, OECD, the UKUSA Agreement, and the World Trade Organization. Bilaterally the two countries have Free Trade Agreement, and a Reciprocal Healthcare Agreement. |
| Niue | N/A | See Foreign relations of Niue The UK has not established diplomatic relations with Niue; the UK does not recognise Niue to be a sovereign nation. Niue does not maintain an embassy in the United Kingdom. The United Kingdom is not accredited to Niue through an embassy; the UK develops relations through its high commission in Wellington, New Zealand. The UK governed Niue from 1900–1901, when Niue was transferred to New Zealand. |
| Papua New Guinea | 1975 | See Papua New Guinea–United Kingdom relations Papua New Guinea and the United Kingdom share Charles III as their head of state. They have had relations since 1975 when Papua New Guinea gained independence from Australia. |
| Solomon Islands | 1978 | See Solomon Islands–United Kingdom relations The UK established diplomatic relations with the Solomon Islands on 7 July 1978. Both countries are Commonwealth Realms. Solomon Islands does not maintain a high commission in the United Kingdom. The United Kingdom is accredited to the Solomon Islands through its high commission in Honiara. The UK governed the Solomon Islands from 1893 until 1978, when the Solomon Islands achieved full independence. Both countries share common membership of the Commonwealth, and the World Trade Organization, as well as the Pacific States–United Kingdom Economic Partnership Agreement. Bilaterally the two countries have a Double Taxation Agreement. |
| Tonga | 1879 | See Foreign relations of Tonga The United Kingdom and the Kingdom of Tonga established formal mutual diplomatic recognition in 1879. Tonga was then a British protectorate from 1900 to 1970, whereupon diplomatic relations resumed at the level of sovereign states. |
| Vanuatu | 1980 | See Foreign relations of Vanuatu The UK established diplomatic relations with Vanuatu on 30 July 1980. Vanuatu does not maintain a high commission in the United Kingdom. The United Kingdom is accredited to Vanuatu through its high commission in Port Vila. The UK governed Vanuatu jointly with France from 1906 until 1980, when Vanuatu achieved full independence. Both countries share common membership of the Commonwealth, and the World Trade Organization. Bilaterally the two countries have signed an Investment Agreement. |

### South America

| Country | Since | Notes |
| Argentina | 1823 | See Argentina–United Kingdom relations Diplomatic relations were cut off before the Falklands War, they were reinstated only in 1990, after the departure of Margaret Thatcher from the post of Prime Minister of the United Kingdom. Argentina has an embassy in London The United Kingdom has an embassy in Buenos Aires. Both countries share common membership of the Atlantic co-operation pact, and the International Criminal Court. |
| Brazil | 1827 | See Brazil–United Kingdom relations The UK established diplomatic relations with Brazil on 17 August 1827. Brazil maintains an embassy in London. The United Kingdom is accredited to Brazil through its embassy in Brasília, and consulates in Belo Horizonte, Recife, Rio de Janeiro, and São Paulo. Both countries share common membership of the Atlantic co-operation pact, the G20, the International Criminal Court, and the World Trade Organization. |
| Chile | 1823 | See Chile–United Kingdom relations The UK established diplomatic relations with Chile on 14 September 1823. Chile maintains an embassy in London. The United Kingdom is accredited to Chile through its embassy in Santiago. Both countries share common membership of CPTPP, the International Criminal Court, OECD, and the World Trade Organization. Bilaterally the two countries have an association agreement. |
| Colombia | 1825 | See Colombia–United Kingdom relations The UK established diplomatic relations with Colombia on 18 April 1825. Colombia maintains an embassy in London. The United Kingdom is accredited to Colombia through its embassy in Bogotá. Both countries share common membership of the International Criminal Court, the OECD, and the World Trade Organization, as well as the Andean Countries–UK Free Trade Agreement. Bilaterally the two countries havea Cultural Agreement, a Double Taxation Agreement, an Investment Agreement, a Partnership for Sustainable Growth, and a Security Agreement. |
| Ecuador | 1853 | See Foreign relations of Ecuador The UK established diplomatic relations with Ecuador on 29 January 1853. Ecuador maintains an embassy in London. The United Kingdom is accredited to Ecuador through its embassy in Quito. Both countries share common membership of the International Criminal Court, and the World Trade Organization, as well as the Andean countries–UK Free Trade Agreement. Bilaterally the two countries have a Double Taxation Agreement. |
| Guyana | 1966 | See Foreign relations of Guyana The UK established diplomatic relations with Guyana on the 26 May 1966. Guyana maintains a high commission in London. The United Kingdom is accredited to Guyana through its high commission in Georgetown. The UK governed Guyana from 1803 to 1966, when Guyana achieved full independence. Both countries share common membership of the Atlantic co-operation pact, the Caribbean Development Bank, the Commonwealth, the International Criminal Court, and the World Trade Organization, as well as the CARIFORUM–UK Economic Partnership Agreement. Bilaterally the two countries have an Investment Agreement. |
| Paraguay | 1853 | See Paraguay–United Kingdom relations The UK established diplomatic relations with Paraguay on 4 March 1853. Paraguay maintains an embassy in London. The United Kingdom is accredited to Paraguay through its embassy in Asunción. Both countries share common membership of the International Criminal Court, and the World Trade Organization. Bilaterally the two countries have an Investment Agreement. |
| Peru | 1823 | See Peru–United Kingdom relations The UK established diplomatic relations with Peru on 10 October 1823. Peru maintains an embassy in London. The United Kingdom is accredited to Peru through its embassy in Lima. Both countries are members of CPTPP, the International Criminal Court, and the World Trade Organization, as well as the Andean Countries–UK Free Trade Agreement. Bilaterally the two countries have an Investment Agreement. |
| Suriname | 1976 | See Foreign relations of Suriname The UK established diplomatic relations with Suriname on 31 March 1976. Suriname does not maintain an embassy in the UK. The United Kingdom is not accredited to Suriname through an embassy. England governed Suriname from 1650 to 1667, when Suriname was ceded to the Netherlands. The UK occupied Suriname from 1799 until 1816. Both countries share common membership of the Atlantic co-operation pact, the International Criminal Court, and the World Trade Organization, as well as the CARIFORUM–UK Economic Partnership Agreement, and Caribbean Development Bank. |
| Uruguay | 1833 | See United Kingdom–Uruguay relations The UK established diplomatic relations with Uruguay in 1833. Uruguay maintains an embassy in London. The United Kingdom is accredited to Uruguay through its embassy in Montevideo. Both countries share common membership of the Atlantic Co-operation Pact, the International Criminal Court, and the World Trade Organization. Bilaterally the two countries have an Investment Agreement. |
| Venezuela | 1834 | See United Kingdom–Venezuela relations The UK established diplomatic relations with Venezuela on 29 October 1834. The United Kingdom is accredited to Venezuela through its embassy in Caracas. Venezuela maintains an embassy in London. Both countries share common membership of the International Criminal Court, and the World Trade Organization. Bilaterally the two countries have an Investment Agreement. |

## Sovereignty disputes

List of territorial disputes involving the United Kingdom:
| Territory | Claimants | Notes |
| Antarctica | United Kingdom • British Antarctic Territory Argentina • Argentine Antarctica Chile • Chilean Antarctic Territory | See Territorial claims in Antarctica The United Kingdom claims the area between 20°W and 80°W as a British Overseas Territory. The area between 25°W and 53°W overlaps Argentina's claim. The area between 74°W and 80°W overlaps Chile's claim. The area between 53°W and 74°W overlaps the claims of both Argentina and Chile. |
| Chagos Archipelago | United Kingdom • British Indian Ocean Territory Mauritius | See Chagos Archipelago sovereignty dispute The United Kingdom de facto administers the archipelago as the British Indian Ocean Territory. Mauritius claims the islands. Mauritius and the UK are currently in negotiations to transfer sovereignty of the Chagos islands to Mauritius. |
| Rock of Gibraltar | United Kingdom • Gibraltar Spain | See Status of Gibraltar The United Kingdom de facto governs Gibraltar as a British Overseas Territory. Spain claims Gibraltar, disputing the interpretation of the Treaty of Utrecht, as well as the location of the border. Gibraltarians voted overwhelmingly to remain under British sovereignty in 1967 and 2002. |
| Falkland Islands | United Kingdom • Falkland Islands Argentina | See Falkland Islands sovereignty dispute The United Kingdom de facto governs the Falkland Islands as a British Overseas Territory. Argentina claims the Islands as part of its Province of Tierra del Fuego, Antarctica and South Atlantic Islands province. In 1982, the dispute escalated when Argentina invaded the islands during the Falklands War. In 2013, the Falkland Islanders voted overwhelmingly to remain a British Overseas Territory. |
| Rockall Bank | United Kingdom Iceland Ireland Denmark • Faroe Islands | See Rockall Bank dispute Rockall is an uninhabited islet located within the exclusive economic zone of the UK. Ireland, Denmark, Iceland, and the UK have all made submissions to the commission set up under the United Nations Convention on the Law of the Sea (UNCLOS). |
| South Georgia, South Sandwich Islands | United Kingdom • South Georgia and the South Sandwich Islands Argentina | See South Georgia and the South Sandwich Islands sovereignty dispute The United Kingdom de facto governs South Georgia and the South Sandwich Islands as a British Overseas Territory. Argentina claims the Islands as part of its Province of Tierra del Fuego, Antarctica and South Atlantic Islands province. In 1982, the dispute escalated when Argentina invaded South Georgia during the Falklands War. |

## Commonwealth of Nations

The UK has varied relationships with the countries that make up the Commonwealth of Nations which originated from the British Empire. Charles III of the United Kingdom is Head of the Commonwealth and is King of 15 of its 56 member states. Those that retain the King as head of state are called Commonwealth realms. Over time several countries have been suspended from the Commonwealth for various reasons. Zimbabwe was suspended because of the authoritarian rule of its President.

## International organisations

The United Kingdom is a member of the following international organisations:
* ACP - Atlantic Co-operation Pact
* ADB - Asian Development Bank (nonregional member)
* AfDB - African Development Bank (nonregional member)
* Arctic Council (observer)
* Australia Group
* BIS - Bank for International Settlements
* Commonwealth of Nations
* CBSS - Council of the Baltic Sea States (observer)
* CDB - Caribbean Development Bank
* Council of Europe
* CERN - European Organization for Nuclear Research
* CPTPP - Comprehensive and Progressive Agreement for Trans–Pacific Partnership
* EAPC - Euro-Atlantic Partnership Council
* EBRD - European Bank for Reconstruction and Development
* ESA - European Space Agency
* FAO - Food and Agriculture Organization
* FATF - Financial Action Task Force
* G7 - Group of Seven
* G10 - Group of Ten
* G20 - Group of Twenty
* IADB - Inter-American Development Bank
* IAEA - International Atomic Energy Agency
* IBRD - International Bank for Reconstruction and Development (also known as the World Bank)
* ICAO - International Civil Aviation Organization
* ICC - International Chamber of Commerce
* ICCt - International Criminal Court
* ICRM - International Red Cross and Red Crescent Movement
* IDA - International Development Association
* IEA - International Energy Agency
* IFAD - International Fund for Agricultural Development
* IFC - International Finance Corporation
* IFRCS - International Federation of Red Cross and Red Crescent Societies
* IHO - International Hydrographic Organization
* ILO - International Labour Organization
* IMF - International Monetary Fund
* IMO - International Maritime Organization
* IMSO - International Mobile Satellite Organization
* Interpol - International Criminal Police Organization
* IOC - International Olympic Committee
* IOM - International Organization for Migration
* IPU - Inter-Parliamentary Union
* ISO - International Organization for Standardization
* ITSO - International Telecommunications Satellite Organization
* ITU - International Telecommunication Union
* ITUC - International Trade Union Confederation
* MIGA - Multilateral Investment Guarantee Agency
* MONUSCO - United Nations Organization Stabilization Mission in the Democratic Republic of the Congo
* NATO - North Atlantic Treaty Organization
* NEA - Nuclear Energy Agency
* NSG - Nuclear Suppliers Group
* OAS - Organization of American States (observer)
* OECD - Organisation for Economic Co-operation and Development
* OPCW - Organisation for the Prohibition of Chemical Weapons
* OSCE - Organization for Security and Co-operation in Europe
* Paris Club
* PCA - Permanent Court of Arbitration
* PIF - Pacific Islands Forum (partner)
* SECI - Southeast European Cooperative Initiative (observer)
* UN - United Nations
* UNSC - United Nations Security Council
* UNCTAD - United Nations Conference on Trade and Development
* UNESCO - United Nations Educational, Scientific and Cultural Organization
* UNFICYP - United Nations Peacekeeping Force in Cyprus
* UNHCR - United Nations High Commissioner for Refugees
* UNMIS - United Nations Mission in Sudan
* UNRWA - United Nations Relief and Works Agency for Palestine Refugees in the Near East
* UPU - Universal Postal Union
* WCO - World Customs Organization
* WHO - World Health Organization
* WIPO - World Intellectual Property Organization
* WMO - World Meteorological Organization
* WTO - World Trade Organization
* Zangger Committee - (also known as the) Nuclear Exporters Committee