Jimmy Carr hosts, as Roisin Conaty and Asim Chaudhry take on Jon Richardson and Josh Widdicombe. Bill Bailey is in Dictionary Corner. Regular Countdown mathematician Rachel Riley and lexicographer Susie Dent are on hand to adjudicate.
| Name | Type | Role | |
|---|---|---|---|
| Roisin Conaty | Guest Star | ||
| Asim Chaudhry | Guest Star | ||
| Josh Widdicombe | Guest Star | ||
| Bill Bailey | Guest Star |