Boiling Point stars (and husband and wife) Graham and Hannah Walters join tonight's SU2C special with their children Grace and Alfie. Also confirmed for the star-studded special are Nicole Scherzinger and former rugby star partner Thom Evans, Jennifer Saunders and The Wright Way actress Beattie Edmondson, and comedy legends Bob Mortimer and Richard Ayoade. The line-up is completed with comedians Harry Hill and Tim Vine and TV star Jeff Brazier and Strictly's Bobby Brazier.