Deirdre O'Kane, Jay Rayner, Tessa Sanderson, Iwan Thomasbr br Series 8, Week 7, Day 5br br Every day this week, celebrity contestants Deirdre O'Kane, Jay Rayner, Tessa Sanderson and Iwan Thomas take on a series of quiz rounds selected by the host, quiz legend Richard Osman.br br A daily winner is declared following a quickfire round at the end of each show, and the scores are tallied across the week, resulting in an overall champion being crowned on Friday.