He was know as Lord Haw Haw

'On 26th August, 1939, Joyce left for Nazi Germany. Soon after arriving in Berlin he found work with the German Radio Corporation as an English language broadcaster. Joyce joined the 'German Calling' programme. On 14th September, 1939, a report in the Daily Express described the broadcaster as speaking the "English of the haw-haw, damit-get-out-of-my-way variety." It was not long before Joyce became known as Lord Haw-Haw. Joyce continued to broadcast throughout the Second World War. In 1940 the Daily Mirror organized the Anti Haw Haw League of Loyal Britons and members pledged not to listen to these broadcasts. Other British subjects who took part in these broadcasts included John Amery, Railton Freeman, Norman Baillie-Stewart, Kenneth Lander and William Griffiths. Joyce was captured by the British Army at Flensburg on 28th May 1945. Three days later Joyce was interrogated by William Scardon, an MI5 officer. Joyce made a full confession but at first the Director of Prosecutions doubted whether he could be tried for treason as he had been born in the United States. However, his broadcasts during the war had made him a hate figure in Britain and the Attorney General, David Maxwell-Fyfe, decided to charge him with high treason. Joyce's trial for high treason began at the Old Bailey on 17th September, 1945. In court it was stated that although he was United States citizen he had held a British passport during the early stages of the war. It was therefore argued in court by Hartley Shawcross that Joyce had committed treason by broadcasting for Germany between September 1939 and July 1940, when he officially became a German citizen. William Joyce was found guilty of treason and was executed on 3rd January 1946. ' Source: http://www.spartacus.schoolnet.co.uk/2WWjoyceW.htm 'Joyce was a prominent member of the British Union of Fascists, led by Oswald Mosley. He moved to Germany in 1939 and broadcast propaganda against the Allies for Goebbels's Nazi Propaganda Ministry until April of 1945. He was nicknamed "Lord Haw Haw" because of his pretentious accent. The British Army captured Joyce in May 1945 as he tried to escape through Denmark. He was tried for treason at the Old Bailey, found guilty and, after an unsuccessful appeal, was hanged on January 3, 1946.' Source: http://images.google.com/imgres?imgurl=http://www.pbs.org/wgbh/masterpiece/jury/bailey/images/joyce.jpg&imgrefurl=http://www.pbs.org/wgbh/masterpiece/jury/bailey/joyce.html&h=191&w=190&sz=14&hl=en&start=4&um=1&tbnid=YcGrCDEpg1J5sM:&tbnh=103&tbnw=102&prev=/images%3Fq%3D%2BWilliam%2BJoyce%26um%3D1%26hl%3Den%26sa%3DG