Davina McCall, Russell Brand, David Dickinson, Little Mix

Bruce Forsyth, Lee Mack, Katy Perry

Seann Walsh, Keith Lemon, Michael Bublé

Heston Blumenthal, John Bishop, Lady Gaga

Josh Widdicombe, Nick Grimshaw, Russell Tovey, Louis Walsh, Beady Eye

Micky Flanagan, Sheridan Smith, Cast of Made in Chelsea, Bastille

Russell Brand, Derren Brown, Adam Hills, The Wanted

Paul O'Grady, Jack Whitehall, Michael Whitehall, Robin Thicke

Tom Hiddleston, Joan Collins, James Corden, Tinie Tempah feat. John Martin

Amanda Holden, Karl Pilkington, Michael Sheen, Jared Leto, Icona Pop

Mo Farah, Joseph Gordon-Levitt, Britney Spears, Jake Bugg

Gok Wan, Johnny Knoxville, Nicole Scherzinger, OneRepublic

David Mitchell, James McAvoy, Tess Daly, Abbey Clancy, Sophie Ellis-Bextor, Julien McDonald, Ben Cohen, Iggy Azalea

David Haye, Rihanna, Justin Timberlake

Jools Holland, Suggs, Matthew Fox and Jessie J

Sean Lock, Mel Giedroyc, Sue Perkins, Miley Cyrus

David Walliams, Kirstie Allsopp, Phil Spencer, Channing Tatum, Jamie Foxx, Mutya Keisha Siobhan

Lee Evans, Keeley Hawes, Deborah Meaden, Peter Jones, Duncan Bannatyne, Kelly Hoppen, Sharon Osbourne, Rizzle Kicks