The 2015 final of the general knowledge quiz, chaired by Russell Davies.
BBC Radio 4
With guests Wolf Alice, Martin Luke Brown, Huskies, Ekkwinox, Snowy and Warren Ireland
BBC Local Radio
Josh Widdicombe is joined by Jennie Gow, Thom Gibbs, Dougie Anderson and Eddie Kadi.
BBC Radio 5 live
Julia Sutherland is joined by comics Jo Caulfield, Ray Bradshaw, Ian Stone and Lucy Porter
BBC Radio Scotland
Greg Rutherford, Darren Campbell, Bob Mills and Jim White fight for punditry points.
Is Russia's criminal justice system fit for purpose?
BBC World Service
David Attenborough hosts a celebration of bird impersonator Percy Edwards.