He then ironically made guest appearances in episodes of London’s Burning where he was seen throwing numerous props into the on-set fire, and Birds of a Feather. On-screen, Kemp, as Grant, was often at the centre of EastEnders’ plots, amongst them abusive marriages to Sharon Watts (Letitia Dean) and Tiffany Mitchell (Martine McCutcheon), and the “Sharongate” storyline, that saw Grant’s brother Phil Mitchell (Steve McFadden) conduct an affair with his wife. His first comeback lasted just a few weeks in 2005, but he returned for a period of three months in 2006, before departing once again in June that year. in September 2009, Steve McFadden (Phil) and Danniella Westbrook (Sam), Kemp’s onscreen siblings, also expressed their desire to have him back on the show. Following his initial departure from EastEnders, Kemp moved from the BBC to ITV for a reported £1.2 million. He took the lead roles in the television series, Without Motive and in Defence in 2000, and in 2002′s Ultimate Force, where he took the role of Army Staff sergeant Henry Garvie from the British Special Air Service.