The Boyz visit Abbey Road studios (in Chelmsford) to record their first single. Producer Benny Van Hoere is sure that they're the worst singers in the world. More problems arise when rival band Boys Ltd win over the public by waking a fan from a coma. How can Boyz Unlimited compete?

• David Walliams
• Richard Osman
• Matt Lucas

• James Corden
• Frank Harper
• Adam Sinclair