Jessica Ennis, Usain Bolt, Tom Daley, Colin Farrell, Kelly Brook, Rita Ora

50 min

Mo Farah, Rosie Huntington-Whitely, Gareth Malone and Plan B

50 min

Andrew Lloyd Webber, Mel C, Tim Minchin, Ben Foster, Cheryl Cole, Kayvan Novak,

50 min

Justin Bieber, Clare Balding, Liam Neeson, The Killers

50 min

Michael Gambon, Emily Blunt, John Bishop, FUN

50 min

Jack Dee, Dynamo, Emma Watson, No Doubt

50 min

Stephen Fry and Taylor Swift

50 min

David Walliams, Ed Sheeran

50 min

David Mitchell, Bradley Cooper, Steven Tyler, Joe Perry, Emeli Sande

50 min

Russell Howard, Bear Grylls, Kylie Minogue, Muse

50 min

Olly Murs, Melissa George, Richard Cheese, Tinie Tempah and Calvin Harris

50 min

Damian Lewis, Katherine Jenkins, Danny Baker, Psy

50 min

Michael McIntyre, Sheridan Smith, Ellie Simmonds, Jonnie Peacock, Sienna Miller, Jamie Oliver and Charlotte Church

50 min