The British Isles

"Fae? What the fok is a fae?!" 
-Drunk Londoner in 2020 
The Royal Republic of the British Isles, also called Britain, New Britain, and known historically as the United Kingdom, is a union state created from the Trans-Britannic Acts of Union. It is a constitutional monarchy with a capital that rotates between Dublin and London every four years. 
The Isles are a member state of the European Union, a bloc which collectively makes up the fourth angle of Earth's 2100, multipolar world order. Individually, it the 13th most powerful nation in the world, while falling behind Germany and France within the bloc itself. The country sports a high standard of living, and one of the highest life expectancy rates in the world, at 122 years. 
The foundations for New Britain were formed during the Vined Throne Crisis, where fae'rayy queen Oberonia Marinda's Faeweald was forced into a civil war against the Fae Purist Faction of her eldest son, Gwynaer Marinda. The crisis threatened both the realm itself, as well as its host nations: The Republic of Ireland, the Republic of Scots and Ulster, and the Kingdom of England and Wales. 
Prince Gwynaer's forces performed simultaneous surprise attacks against all three host governments, resulting in mass chaos, as well as the partial decapitation of all three governments. Already in the midst of a unification process, the provisional governments of Ireland and Scots-Ulster quickly united into the Republic of Gaels, before allying with both the Oberonians and the Anglo-Welsh. When the purists were defeated, the alliance sought to deepen ties in order to speed up the reconstruction process, which eventually lead to the re-unification of the British Isles. 
Britain has a total of three mage organizations. The British Ministry of the Unnatural (BMU) is a member of the European Mage Commission, while Her Majesty's Mages' Circle is the primary agency responsible for the Faeweald. In addition to those two, there is also MI-13, the Isles' supernatural secret service.