It is thought Clifton began drinking heavily following a long struggle against heroin addiction. In December 2002 he undertook a five-day detox programme at a clinic in Harrogate after his father agreed to pay the ?2,950 cost. Tomlinson, a militant trade unionist imprisoned for his activities in the Seventies who went on to make his name as an actor on Brookside before starring in The Royle Family, was thought to have had a strained relationship with Clifton, his brother Gareth, 31, and sister Katie, 27.