E1 - Miles Jupp, Rose Matafeo, Vic Reeves

Aired: July 26, 2019

Sean Lock and Miles Jupp take on Jon Richardson and Rose Matafeo, while Vic Reeves joins Susie Dent in Dictionary Corner. Hosted by Jimmy Carr, with regular Countdown mathematician Rachel Riley looking after the numbers and letters.

E2 - Victoria Coren Mitchell, James Acaster, Morgana Robinson

Aired: August 02, 2019

Sean Lock and Victoria Coren Mitchell take on Jon Richardson and James Acaster in the classic panel game. Morgana Robinson joins Susie Dent in Dictionary Corner, with Rachel Riley.

E3 - Joe Wilkinson, Sara Pascoe, Sam Simmons

Aired: August 09, 2019

Sean Lock and Joe Wilkinson take on Jon Richardson and Sara Pascoe. Sam Simmons is in Dictionary Corner, while maths whizz Rachel Riley looks after the letters and numbers.

E4 - Rob Beckett, Alan Carr, Sarah Millican, Nick Mohammed

Aired: August 16, 2019

Sean Lock and Rob Beckett take on special guest team captains Alan Carr and Sarah Millican. Nick Mohammed joins Susie Dent is in Dictionary Corner, while maths whizz Rachel Riley looks after the letters and numbers.

E5 - Sara Pascoe, Alan Carr, Tom Allen, Rosie Jones

Aired: August 23, 2019

Sean Lock and Sara Pascoe take on Alan Carr and Tom Allen, while Rosie Jones is in Dictionary Corner.

E6 - Harriet Kemsley, Alan Carr, Catherine Tate, Adam Buxton

Aired: August 30, 2019

Sean Lock and Harriet Kemsley take on special guest team captain Alan Carr and Catherine Tate, while Adam Buxton joins Susie Dent in Dictionary Corner

E7 - Katherine Ryan, Joe Wilkinson, Adam Riches

Aired: September 06, 2019

Sean Lock and Katherine Ryan take on Jon Richardson and Joe Wilkinson. Adam Riches as Sean Bean is in Dictionary Corner.