8 Out of 10 Cats Does Countdown

Katherine Ryan hosts a special, celebrating 100 years of women's suffrage. Roisin Conaty and Jessica Hynes go against Sara Pascoe and Lolly Adefope. Also featuring Morgana Robinson, Susie and Rachel.

Jimmy Carr hosts with Sean Lock and Katherine Ryan who take on Jon Richardson and Joe Wilkinson in the classic words and number quiz. Dr John Cooper Clarke is Dictionary Corner with Susie Dent and Rachel Riley looks after the numbers.

Jimmy Carr hosts as Sean Lock and Miles Jupp take on guest captain Alan Carr and Roisin Conaty in the classic words and number quiz. Ivan Brackenbury joins Susie Dent in Dictionary Corner, while maths whizz Rachel Riley looks after the numbers.

Jimmy Carr hosts, as Sean Lock and Rob Beckett take on Jon Richardson and Claudia Winkleman with special guests Nick Mohammed and Joe Wilkinson.

Jimmy Carr hosts as Sean Lock and Phil Wang take on guest captain Alan Carr and Harriet Kemsley in the classic words and numbers quiz. Plus David O'Doherty and Joe Wilkinson join Countdown regulars Susie Dent and Rachel Riley.

Jimmy Carr hosts as Sean Lock and Richard Ayoade take on Jon Richardson and Jessica Knappett. Plus special guests Alex Horne and the Horne Section join Susie Dent in Dictionary Corner along with maths whizz Rachel Riley.

Jimmy Carr hosts the game show mash-up as Sean Lock and Kevin Bridges take on Joe Wilkinson and Victoria Coren Mitchell. Adam Kay joins Susie Dent in Dictionary Corner, while maths whizz Rachel Riley looks after the numbers.

Jimmy Carr hosts the final as Sean Lock and Roisin Conaty take on guest captain Alan Carr and Joe Lycett. Plus guest Spencer Jones in Dictionary Corner while maths whizz Rachel Riley looks after the numbers and letters.