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
Ross Kemp in Afghanistan Battalion (1 R ANGLIAN, "The Vikings") of the Royal Anglian Regiment. As a follow-up to the first series, "Ross Kemp: Return to Afghanistan", first broadcast from 1 February 2009, followed the 2008 deployment of the Argyll and Sutherland Highlanders (5 SCOTS), the 5th battalion of the Royal Regiment of Scotland. Kemp and his crew participate in the Vikings' (Royal Anglians) initial training in Britain for the deployment. They then visit the unit during their six-month tour, filming both life at rest and on fighting patrols in Helmand. The series finally covers their return to the UK. In the second series,