Is Trevor involved in Gemma's attack?

As Pcs Tony Stamp and Reg Hollis find Gemma Heyes unconscious in an alley after a night with failed pop star Billy Peters, DC Jo Masters and DS Stuart Turner find Billy with a bloodied nose. When the officers learn that Gemma's friend Liam hit Billy before running away, Reg and Tony arrest Liam who admits to the attack. Meanwhile, Billy claims that he asked his driver, Trevor Jones (guest star Sid Owen), to drive Gemma home but, when questioned, Trevor tells Stuart that Gemma insisted on walking. At the hospital, Gemma learns she was raped - but with Billy and Liam eventually in the clear, the suspect is still close by. Later, TV presenter Stuart smugly heads off to the 'Wanted' studios in a limousine - and Trevor's his driver... Also, when Sergeant Smithy learns that Carly Samuels' mum Leanne has lost her job for taking time off to care for Carly's baby daughter, he urges the teenager to face up to her responsibilities. VIDEO: Watch Sid Owen's appearance in The Bill