William 'Bill' Kerr (born 10 June 1922) is an Australian stage, film and television actor. He was born into a performing arts family in Cape Town, South Africa, but grew up in Wagga Wagga, New South Wales, Australia. He began working as a child actor in depression era Australia, taking his first major role in The Silence of Dean Maitland, one of Australia's first talking films. After serving in the Second World War, Kerr moved to England to further his acting career, and during the 1940s he was regularly featured in the BBC radio series Variety Bandbox. His trademark was his catch phrase "I'm only here for four minutes..." In the 1950s, he had a regular role as an Australian lodger in the BBC radio comedy series Hancock's Half Hour. Initially sharper than Hancock's characterisation, it was developed into a more dim-witted character who became the butt of Hancock's jokes. His television appearances in Britain include a 1968 Doctor Who story called The Enemy of the World, with Patrick Troughton, and a long-running part in the early 1960s BBC-TV soap, Compact.