[1] After a conviction for libel the same year, Beamish fled Britain and began a career of touring speaker, travelling to Germany, Canada, the United States or Japan in order to promote antisemitic and fascist causes.
[2] Beamish then settled in Bloemfontein, South Africa, where he ran a company named Empire Tea Rooms along with a friend.
[4][3] Upon returning to London, Beamish ran as an independent candidate in the 1918 Clapham by-election, pledging to "support the Premier in ousting the Hun and making Germany pay for the War".
In a deliberate provocation conceived to draw public attention, Beamish and Frazer produced a poster in March 1919 denouncing British-Jewish politician Sir Alfred Mond, then the First Commissioner of Works, as a traitor to his country.
[7][3] Although he remained nominally president of The Britons until his death in 1947, Beamish subsequently participated little in the activities of the organisation, apart from two spectacular reappearances in 1923 and 1932.
[8] Beamish settled in Rhodesia in 1920,[9] then he travelled to Germany in 1923 where he addressed one of Hitler's meetings at the Circus Krone on January 18, with a speech delivered in English and translated by Dietrich Eckart.
[13] In 1936 Beamish returned to England and became involved with the Nordic League, an antisemitic organisation founded with German assistance one year earlier.
[9] In September 1936 Beamish visited Japan, then spoke at a meeting of the Canadian Nationalist Party in Winnipeg in October,[14] before embarking in December on a major lecture tour of Nazi Germany as a guest of Foreign Minister Joachim von Ribbentrop.
[16] Beamish also spoke at meetings in North America with Canadian fascist leader Adrien Arcand, including some hosted by the German American Bund.
He became an independent Member of the Southern Rhodesian Legislative Assembly in August 1938 following a by-election, but lost his seat in the April 1939 election.
By then, he had distanced himself from The Britons, whom he accused in a letter wrote two months before his death of departing from the "sole purpose" of the organisation, that is "exposing the Jewish Menace".