Comedian Jason Manford, athletics legend Iwan Thomas and the lovely Debbie McGee will each need the quick wits and nerves of steel if they're to capture the prize.

Melvin Odoom, Tom Allen, Patti Clare

Fern Britton, Iain Stirling, Mark-Francis Vandelli

Judge Rinder, Josie Gibson, Greg Rutherford

Richard Madeley, Sheila Ferguson, Mark Wright

Sam Thompson, Suzi Ruffell, Stephen Mangan

Richard Coles, Toyah Willcox, Sharron Davies