In 2009 recession and repossession mean homelessness is a frightening possibility for almost everyone. But for five famous volunteers, it's about to become a terrifying reality. Former tennis star Annabel Croft, The One Show's Hardeep Singh Kohli, journalist and writer Rosie Boycott, former Coronation Street actor Bruce Jones and the Marquis of Blandford put homelessness in the spotlight by agreeing to swap their lavish lifestyles, fame and fortune for a world of sleeping rough, soup runs and hostels.