By Nicola Methven Claudia Winkleman admits she’ll be sick with nerves as the second series of The Traitors starts, as she is so desperate for the fans to love it. The host of the Bafta-winning BBC reality game show about treachery and loyalty also reveals that turning 50 made her more adventurous when it came to accepting jobs, and that the most underhand thing she’s ever done is steal a lipstick aged 15. At Ardross Castle, where the show is set, Claudia opens up to TV Editor Nicola Methven about its success and her hopes for the new run, which starts this week… Q Are you nervous about the s…