Sir Alan Sugar sets ten celebrities his toughest challenge yet in a special edition of the reality series. Stars including Jack Dee, Jonathan Ross, Ruby Wax and Carol Vorderman battle to create a special mystery product for Comic Relief. With just three days to invent, brand and market something original, tempers fray and egos are bruised as the task unravels and one team comes unstuck. Who wins, who loses, and which one of Britain's biggest celebrities gets fired?
| Name | Type | Role | |
|---|---|---|---|
| Jack Dee | Guest Star | ||
| Jonathan Ross | Guest Star | ||
| Ruby Wax | Guest Star | ||
| Carol Vorderman | Guest Star |