Comedian Holly Walsh, the author and adventurer David Bramwell and "Freakonomist" Stephen J. Dubner.
Mathematician Hannah Fry, Horrible Histories resident historian Greg Jenner, and the tattyfilarious Ken Dodd.
Comic Felicity Ward, cricket commentator Henry Blofeld, and the first Briton in space Helen Sharman.
Actor and comic Rufus Hound, creator of the Eden Project Sir Tim Smit, and archaeoastronomer Doris Vickers.
Comic Matt Lucas, neuroscientist Prof. Sophie Scott, and Gogglebox's chess grandmaster William Hartston.
Comedian Susan Calman, explorer and zoologist Lucy Cooke and Factum Arte's Adam Lowe.