AJ Odudu, Gemma Collins, Jessica Hynes, Tim Key

Matt Lucas and Noel Fielding welcome AJ Odudu, Gemma Collins, Jessica Hynes and Tim Key to the tent for the second of this year's star-studded special editions for the charity campaign. They must make Signature sandwich cakes, a Stand Up To Cancer-themed classic tart for the Technical, and in the showstopper they relive their earliest childhood memories in choux.