E1 - Bob Mortimer, Tom Allen, Richard Ayoade, Harriet Dyer & Ian Smith

Aired: July 25, 2025

Jimmy Carr returns with a brand-new series of the chaotic comedy twist on Channel 4's classic words and numbers quiz. In this episode, Richard Ayoade and Harriet Dyer take on Bob Mortimer and Tom Allen. Ian Smith's in Dictionary Corner with legendary lexicographer Susie Dent, while maths machine Rachel Riley looks after the numbers. And Joe Wilkinson - quite literally - drops in. Because of course he does.

E2 - Joe Wilkinson, Josh Widdicombe, Rhod Gilbert, Thaniya Moore & Frankie Monroe

Aired: August 01, 2025

Jimmy Carr hosts the chaotic comedy twist on Channel 4's classic brainteaser quiz. In this episode, Joe Wilkinson and Josh Widdicombe take on Rhod Gilbert and Thaniya Moore. Frankie Monroe (Joe Kent-Walters) joins Susie Dent in Dictionary Corner, while maths whizz Rachel Riley looks after the numbers.

E3 - Joe Wilkinson, Alex Brooker, Kevin Bridges, Judi Love & Brian Butterfield

Aired: August 08, 2025

Jimmy Carr hosts another helping of chaos, comedy and Countdown. Joe Wilkinson and Alex Brooker take on Kevin Bridges and Judi Love. Brian Butterfield (Peter Serafinowicz) joins Susie Dent in Dictionary Corner, while maths whizz Rachel Riley looks after the numbers.

E4 - Roisin Conaty, Phil Wang, Joe Wilkinson, Lou Sanders & David O'Doherty

Aired: August 15, 2025

Jimmy Carr hosts with Countdown regulars Rachel Riley and Susie Dent. Roisin Conaty and Phil Wang play against Joe Wilkinson and Lou Sanders, with David O'Doherty joining Susie in Dictionary Corner.

E5 - Lucy Beaumont, Rob Brydon, Joe Wilkinson & Huge Davies

Aired: August 22, 2025

Jimmy Carr, Rachel Riley and Susie Dent host the comedically contorted Countdown mash-up. This time, Jon Richardson and Lucy Beaumont take on Rob Brydon and Joe Wilkinson, with Huge Davies in Dictionary Corner.