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 Kemp returns to Afghanistan to assess how the conflict has changed since his first visit in 2007. A special two-part third series, entitled "Middle East", follows Kemp as he visits soldiers working in Gaza and Israel. In the fourth series, "Back on the Frontline", Kemp returns to the frontline with the Royal Marines as he re-visits Afghanistan two years after he last departed, to see how the country has progressed since his last visit. A final special, broadcast in 2012, entitled "The Invisible Wounded", follows soldiers as they return home from Afghanistan, some of whom are forced to deal with