Question: Cecil Randolph Dudgeon (7 November 1885 – 4 November 1970) was a Scottish Liberal Member of Parliament (MP) who joined which 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), New Party?

Context paragraphs:
Mary Richardson: Mary Raleigh Richardson (1882/3 – 7 November 1961) was a Canadian suffragette active in the women's suffrage movement in the United Kingdom, an arsonist and later the head of the women's section of the British Union of Fascists (BUF) led by Sir Oswald Mosley.

Nora Radcliffe: Nora Radcliffe (born 4 March 1946, Aberdeen) is a Scottish Liberal Democrat politician and former Member of the Scottish Parliament for Gordon, first elected in 1999.  During her two terms in the Scottish Parliament she held various party spokespersonships, most frequently the Scottish Liberal Democrats' Equal Opportunities, Environment and Rural Development briefs.

Alison McInnes: Alison McClure McInnes OBE (born 17 July 1957) is a Scottish Liberal Democrat politician.  She is the Scottish Liberal Democrat spokesperson for Health and Justice in the Scottish Parliament.  She was a Member of the Scottish Parliament for the North East Scotland region 2007−2016.

Cecil Dudgeon: Cecil Randolph Dudgeon (7 November 1885 – 4 November 1970) was a Scottish Liberal Member of Parliament (MP) who joined Oswald Mosley's New Party.

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.

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).

Action (newspaper): Action was a newspaper of Oswald Mosley's British Union of Fascists (BUF).  The paper first appeared in 1936.  The editor of the paper from 1939 was Alexander Raven Thomson, the BUF's chief ideologue.  It ceased publication in 1940 due to the outbreak of the Second World War and the internment of the BUF's leadership.  For most of its existence, "Action" ran parallel to the official mouthpiece of the BUF, "The Blackshirt".  After the launch of the less hard-line "Action", "The Blackshirt" became more targeted at committed fascists.

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.

Canadian Union of Fascists: The Canadian Fascist Party was a fascist political party based in the city of Winnipeg, Manitoba, Canada in the 1930s.  The formative core of the party was a splinter group from the Canadian Nationalist Party that found the principles of corporativism to be more important than the largely racial motivations of the Nationalist Party.  This disposition is highlighted in one official statement that "anti-semitism was a symptom of Germany not of Fascism".  The party was founded as the British Empire Union of Fascists and was affiliated with the British Union of Fascists.  It later became known as the Canadian Union of Fascists and Canadian Union.  It published its own newspaper, "The Thunderbolt".

Jim Wallace, Baron Wallace of Tankerness: James Robert Wallace, Baron Wallace of Tankerness, (born 25 August 1954) is a British politician and former leader of the Liberal Democrats in the House of Lords.  He was formerly Leader of the Scottish Liberal Democrats, Member of Parliament (MP) for Orkney and Shetland, Member of the Scottish Parliament (MSP) for Orkney, the first Deputy First Minister of Scotland in the Scottish Executive and Advocate General for Scotland.

Supporting paragraphs: Cecil Dudgeon Oswald Mosley
Answer: Oswald Ernald Mosley