18/32 Tim Wonnacott is joined by experts Anita Manning and David Harper in Brampton. (R)
2/6 Markus Birdman, Lloyd Langford and Chris Corcoran star in Rhod Gilbert's comedy quiz.
BBC Radio 4 Extra
6/12 Contestants include Joe Calzaghe, Phil Taylor, Phil Vickery and Sir Geoff Hurst. (R)
Jeremy Vine hosts a general knowledge quiz featuring the UK's top quiz champions.
Idris Charles a'r criw sy'n gofyn 'Oes 'na Roc ar ôl ar Radio Cymru?'. (R)
BBC Radio Cymru
9/18 Stephen Fry messes with minds with Sarah Millican, Tommy Tiernan and Josh Widdicombe. (R)
BBC Two except Northern Ireland
10/12 In the second semi-final, the six remaining celebrities continue to battle for the title. (R)
5/6 Moral and ethical posers for John Finnemore, Danielle Ward, Alun Cochrane and Ann Leslie.
19/32 Tim Wonnacott is joined by experts Charlie Ross and Charles Hanson in Ardingly. (R)