Before becoming publicly known, Kemp made a TV commercial for Kellogg’s Fruit ‘n Fibre breakfast cereal. His most famous role to date is that of hardman Grant Mitchell in the BBC soap opera EastEnders. BBC bosses have left Kemp’s role open for a possible future return. Following his initial departure from EastEnders, Kemp moved from the BBC to ITV for a reported £1.2 million. He also gained the role of “Cirra” in the 2004 TV film, Spartacus. in 2005, Kemp appeared in an episode of BBC’s Extras and in a two-part adaptation of the Gerald Seymour novel A Line in The Sand for ITV, and he has also presented, on The Friday Night Project and as a stand in host on The Paul O’Grady Show (2007; 2008). The second series featured “MS13″ from El Salvador, neo-Nazis in Russia, football hooligans in Poland, American “Bloods” and “Crips” gangs in St. Louis, and the Numbers gang in South Africa.