Billy Mitchell (EastEnders) revealed in 2006 that the role was extended by "coincidence and chance": "I was offered four episodes and here I am, about 800 later. [...] Ross Kemp (Grant) said that he was leaving, and there was a gap in the Mitchell family, so they brought me back to do stuff towards his leaving. After that they offered me a year." Billy was reintroduced in 1999, making recurring appearances. He was involved in the leaving storyline of Grant Mitchell in October 1999, before returning later in the year as a regular character. When Billy was first introduced, he was depicted as
Sarah Kemp Sarah Kemp Sarah Kemp (born Gypsy Kemp, 1937 – 9 January 2015) was an Australian actress best known for starring in the Australian soap opera "Sons and Daughters", playing the character of dizzy socialite Charlie Bartlett, from 1982 to 1987. Kemp, who was born as Gypsy Kemp in 1937, started her career in the United Kingdom, with credits including the film "A Touch of the Other" (1970), two episodes of the "Doctor Who" story "Day of the Daleks" (1972), and a 1972 episode of "The Benny Hill Show". She was in the series "Shoestring", which appeared on BBC television between