Jimmy Carr hosts a brand-new series of the words and numbers game show mash-up, with Countdown regulars Rachel Riley and Susie Dent. Alan Carr and Harriet Kemsley play against Jonathan Ross and Maisie Adam. Huge Davies is in Dictionary Corner.
| Name | Type | Role | |
|---|---|---|---|
| Alan Carr | Guest Star | ||
| Harriet Kemsley | Guest Star | ||
| Maisie Adam | Guest Star | ||
| Huge Davies | Guest Star | ||
| Jonathan Ross | Guest Star |