His first credited television appearance was in 1986, playing Graham Lodsworth in the ITV soap opera Emmerdale Farm (now Emmerdale). 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. He was treated at the scene by paramedics before being taken to Barnet Hospital in north London, but made a full recovery. He also gained the role of “Cirra” in the 2004 TV film, Spartacus. The first series featured gangs and police corruption in Brazil, Maori gangs in New Zealand, neo-Nazi skinheads in California, gangsters in London, and teenagers from Blaenau Gwent.