The comedian looks ahead to this weekend's horse-racing event with Gok Wan and Nick Luck who are part of the Channel 4 presenting team, plus some surprise guests and equine themed fun and games. Other guests include Russell Brand, who chats about his latest film The Emperor's New Clothes, Game of Thrones star Maisie Williams talks about her role in the new movie The Falling and Nick Jonas, formerly of the Jonas Brothers, performs his new single Jealous live in the studio