Jimmy Carr hosts a brand-new series of the words and numbers game show mash-up, with Countdown regulars Rachel Riley and Susie Dent. Jon Richardson and Lucy Beaumont take on Richard Ayoade and Joe Wilkinson. Finlay Christie is in Dictionary Corner.
| Name | Type | Role | |
|---|---|---|---|
| Joe Wilkinson | Guest Star | Self - Guest Captain | |
| Richard Ayoade | Guest Star | Self | |
| Lucy Beaumont | Guest Star | Self | |
| Finlay Christie | Guest Star | Dictionary Corner |