Series 4

Clare Balding, Darren Harriott and Jay Blades, Josie Gibson, Mollie King, Richard Madeley and Tom Allen try to help the contestants answer their way to a fortune.

Alex Jones, Ellie Simmonds, Paddy McGuiness, Ranvir Singh, Rosie Ramsey, Seann Walsh and Sue Perkins try to help the contestants answer their way to a fortune.

Anita Rani, Babatunde Aleshe, Ekin-Su, Gyles Brandreth, Josh Widdicombe, Nick Knowles and Stacey Dooley try to help the contestants answer their way to a fortune.

Big Narstie, Ellie Taylor, Frankie Bridge, Harry Judd, Jonathan Ross, Richie Anderson and Vogue Williams try to help the contestants answer their way to a fortune.

Ed Balls, Oti Mabuse, Jamie Laing, Gok Wan, Will Mellor, Kate Williams and Fred Sirieix try to help the contestants answer their way to a fortune.

Rylan Clark, Peter Crouch and Nicole Scherzinger compete in a Christmas special. They're joined by Abbey Clancy, Nigel Havers, Carol Vorderman, Aled Jones, Judi Love, Joe Marler and Scott Mills as the celebrity experts.

Chris McCausland, Gabby Logan, GK Barry, Iain Stirling, Liza Tarbuck, Rachel Riley and Trevor Nelson try to help the contestants answer their way to a fortune.

Dermot O'Leary, Dame Jessica Ennis-Hill, Roman Kemp, Adam Kay, Angela Scanlon, Kay Burley and Alex Brooker try to help the contestants answer their way to a fortune.

Russell T Davies, AJ Odudu, Deborah Meaden, Bash The Entertainer, Lucy Beaumont, Harry Redknapp and William Hanson try to help the contestants answer their way to a fortune.

Katherine Ryan, Asim Chaudhry, Vanessa Feltz, Steve Pemberton, Kate Garraway, Ainsley Harriott and Phil Tufnell try to help the contestants answer their way to a fortune.