Question: Alan Hancock was a former member of the British Union of Fascists, which was formed by which British politician who rose to fame in the 1920s as a Member of Parliament?

full_context: Document 1: British National Party: The British National Party (BNP) is a far-right and fascist political party in the United Kingdom. It is headquartered in Wigton, Cumbria, and its current leader is Adam Walker. A minor party, it currently has one councillor in UK local government. During its heyday in the 2000s, it had over fifty seats in local government, one seat on the London Assembly, and two Members of the European Parliament.
Document 2: Richard Edensor Heathcote: Richard Edensor Heathcote (1780–1850) was a British industrialist. Born the son of Sir John Edensor Heathcote of Longton Hall. He was elected the Member of Parliament (MP) for Coventry in 1826 and rebuilt (in the Elizabethan style) Apedale Hall, near Newcastle, in Staffordshire, at about the same time. He died in Genova, Italy, in 1850. A descendant was Oswald Mosley, the founder of the British Union of Fascists who lived for a time at Apedale Hall.
Document 3: Oswald Mosley: Sir Oswald Ernald Mosley, 6th Baronet of Ancoats ( ; 16 November 1896 – 3 December 1980) was a British politician who rose to fame in the 1920s as a Member of Parliament and later in the 1930s became leader of the British Union of Fascists (BUF).
Document 4: League of Empire Loyalists: The League of Empire Loyalists (LEL) was a British pressure group (also called a "ginger group" in Britain and the Commonwealth of Nations), established in 1954. Its ostensible purpose was to stop the dissolution of the British Empire, though some critics charged it with being an attempt to re-found the British Union of Fascists. The League was a small group of current or former members of the Conservative Party led by Arthur K. Chesterton, a former leading figure in the British Union of Fascists, who had served under Sir Oswald Mosley. The League found support from some Conservative Party members, although it was disliked very much by the leadership.
Document 5: The European (1953 magazine): The European was a privately circulated far-right cultural and political magazine that was published between 1953 and 1959. During this tenure, it was edited by fascist supporter and politician Diana Mosley. The magazine was published by 'Euphorion Books', a publishing company formed by Mosley and her husband, Sir Oswald Mosley, founder of the British Union of Fascists.
Document 6: The Blackshirt: The Blackshirt was the official newspaper of Oswald Mosley's British Union of Fascists (BUF). The paper first appeared in 1933. From June 1939 it became the "British Union News". It ceased the same year. The paper also incorporated the short-lived "The Fascist Week" (1933-34).
Document 7: Freddie Ross Hancock: Freda "Freddie" Ross Hancock MBE (born Freda Ross, 7 April 1930) is a British-born, New York-based entertainment industry marketing consultant and the founder of the East Coast branch of the British Academy of Film and Television Arts.
Document 8: Union Movement: The Union Movement was a far-right political party founded in Britain by Oswald Mosley. Where Mosley had been associated with a peculiarly British form of fascism, the Union Movement attempted to redefine the concept by stressing the importance of developing a European nationalism rather than narrower country-based nationalisms. The UM has therefore been characterized as an attempt by Mosley to start again in his political life by embracing more democratic and international policies, than those with which he had been associated.
Document 9: British Movement: The British Movement (BM), later called the British National Socialist Movement (BNSM), is a British Neo-Nazi organisation founded by Colin Jordan in 1968. It grew out of the National Socialist Movement (NSM), which was founded in 1962. Frequently on the margins of the British far-right, the BM has had a long and chequered history for its association with violence and extremism. It was founded as a political party but manifested itself more as a pressure and activist group. It has had spells of dormancy.
Document 10: Flash and Circle: The Flash and Circle is the second symbol used by the British Union of Fascists (BUF) and its best known symbol. (The BUF had briefly used the fasces of Mussolini's fascists.) It was chosen to represent "action within unity". Oswald Mosley's post-war group the Union Movement and his National Party of Europe initiative also used this symbol.
Document 11: Alan Hancock: Alan Vivien Hancock (14 August 1914-July, 1989) was one of the early leaders of the Racial Preservation Society (RPS). He was formerly a member of the British Union of Fascists (BUF) which was formed in 1932 by ex-Labour government minister Sir Oswald Mosley and was a union of several small, extreme nationalist parties. Hancock formed part of a three-man leadership team in the RPS who came from the BUF, alongside Ted Budden and Jimmy Doyle.
Document 12: Gary Raikes: Gary Raikes (born 10 August 1958) is the leader of the New British Union, a fascist revival of Sir Oswald Mosley's British Union of Fascists. He was previously the leader in Scotland of the British National Party and then Britain First.
Document 13: British National Party (1960): The British National Party (BNP) was a far right political party that operated in the United Kingdom from 1960 to 1967. It was led by John Bean. The group, which was subject to internal divisions during its brief history, established some areas of local support before helping to form the National Front in 1967.
Document 14: British Union of Fascists: The British Union of Fascists, or BUF, was a fascist political party in the United Kingdom formed in 1932 by Oswald Mosley. It changed its name to the "British Union of Fascists and National Socialists" in 1936 and, in 1937, to "British Union". It was finally disbanded in 1940 after it was proscribed by the British government, following the start of the Second World War.
Document 15: Friends of Oswald Mosley: The Friends of Oswald Mosley (FOM) is the last vestige of Oswald Mosley's British Union of Fascists (BUF) and its successors the Union Movement and the Action party. Their motto is "The spirit lives ... the rest will follow". The group is not politically active but has described itself as "pro-Islam, pro-EU, against US global supremacy, anti-capitalist, anti-state socialism, [and] pro-syndicalism".
ground_truth: Oswald Mosley