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Appearances
8 Out of 10 Cats Does Countdown
Guest cast, played by Katherine Ryan
- Episode 6x01: David Mitchell, Katherine Ryan, David O'Doherty (Jan 9, 2015)
- Episode 7x04: Rob Beckett, Katherine Ryan, Greg Davies (May 29, 2015)
- Episode 7x07: Bob Mortimer, Sarah Millican, Katherine Ryan, Alex Horne (Jun 26, 2015)
- Episode S07 Special: Christmas Special: David O'Doherty, Johnny Vegas, Katherine Ryan (Dec 8, 2015)
- Episode 9x05: Katherine Ryan, David Mitchell, Nick Helm (Mar 31, 2016)
- Episode 10x04: David Mitchell, Katherine Ryan, The Brett Domino Trio (Aug 26, 2016)
- Episode 12x08: Chris Addison, Joe Wilkinson, Katherine Ryan, David O'Doherty (May 1, 2017)
- Episode 13x03: Richard Ayoade, Katherine Ryan, Stephen Mangan, Bill Bailey (Jul 6, 2017)
- Episode 14x03: Jason Manford, Alan Carr, Katherine Ryan, Ivan Brackenbury (Sep 1, 2017)
- Episode 16x01: Katherine Ryan, Roisin Conaty, Jessica Hynes, Sara Pascoe, Lolly Adefope, Morgana Robinson (Jul 13, 2018)
- Episode 16x02: Katherine Ryan, Joe Wilkinson, John Cooper Clarke (Jul 20, 2018)
- Episode 18x07: Katherine Ryan, Joe Wilkinson, Adam Riches (Sep 6, 2019)
- Episode 19x03: Richard Ayoade, Katherine Ryan, David O'Doherty (Jan 23, 2020)
- Episode S20 Special: Best Bits 1 (Aug 21, 2020)
- Episode 21x01: Katherine Ryan, Joe Lycett, Johnny Vegas, Christopher Bliss (Jan 14, 2021)
- Episode 21x06: Joe Wilkinson, Lee Mack, Katherine Ryan, The Brett Domino Trio (Feb 18, 2021)