Plot: Sarah Millican stands in for Jo Brand on An Extra Slice and is joined by Gregg Wallace, Joe Lycett and pastry chef Cherish Finden to dissect this week's events in the tent, with unseen footage from the BBC One show and an interview with the latest baker to leave. They also taste bakes brought in by the studio audience and look at viewer photos of their bakes from home - the delicacies and the calamities