4 May -- On This Day [multiple clips]

1979: Election victory for Margaret Thatcher. The Conservative Party wins the general election making Margaret Thatcher Britain's first woman prime minister. Other video and audio from the BBC news archive, WWII and 1950-2004, includes 1982: Argentines destroy HMS Sheffield; 2000: Ken Livingstone voted London mayor; 1966: Doctors and dentists get huge pay rise; 1953: Duke of Edinburgh gets his wings.