William (Billy) Walker (Stepney, London, 3 March 1939) is a retired British heavyweight boxer and actor. He was born in London in 1939 and turned professional in 1961 after 39 amateur bouts. His nickname was "Golden Boy". His professional record was 21 wins (16 by knockout), 8 losses and 2 draws. During 1967, he fought for both the British and European titles, losing to Henry Cooper (Great Britain) and Karl Mildenberger (West Germany) respectively. After he retired from the ring in 1969 he appeared in several British films and TV shows. His autobiography "When the Gloves Came Off" ISBN 978-1-86105-970-3 was published in 2007.