Jimmy Carr hosts, inviting Jon Richardson and Lucy Beaumont to compete against Rob Brydon and Joe Wilkinson. Regular Countdown mathematician Rachel Riley and lexicographer Susie Dent are on hand to adjudicate, while Huge Davies joins Susie in Dictionary Corner
| Name | Type | Role | |
|---|---|---|---|
| Jon Richardson | Guest Star | ||
| Lucy Beaumont | Guest Star | ||
| Rob Brydon | Guest Star | ||
| Joe Wilkinson | Guest Star | ||
| Hugh Davies | Guest Star | Huge Davies (Dictionary Corner) |