As the police drama celebrates its 25th anniversary, stars past and present reflect on its development and what it meant for their careers. Among the household names who cut their television teeth on the Sun Hill set are Keira Knightley, David Walliams, Sean Bean, Michelle Collins, James McAvoy, and Ray Winstone, while Roger Daltrey, Les Dennis, Pauline Quirke and Darren Day look back fondly on guest appearances as assorted villains and victims. 1988 saw the television debut of someone who is now a household name - Paul O'Grady. Then known as Paul Savage, he played a transvestite called Roxanne in three episodes. Paul reveals: "It was my first telly job. I was working at the Vauxhall Tavern and one of the casting directors came down and said do you fancy being in The Bill? At the time I thought I was the new Garbo." Others who've featured in the show, in some form or other, include Emma Bunton, Hugh Laurie, Alex Kingston, Denise Van Outen and Kathy Burke. In fact, the only people they've failed to mention in the press release are Russell Brand and Andrew Sachs...