London Challenge: Centrepoint City Sleepout

This annual event sees hundreds of Londoners sleep outdoors in order to raise money for homeless young people via the charity Centrepoint, with the odd celeb on hand to liven up the night – including comedian Tim Vine and singers Eliza Doolittle and Stooshe on entertainment duties, Richard Madeley hosting, and Radio 1 DJ Sara Cox taking on the role of ambassador. Food will be provided by the RAF, there'll be a secure sleeping area and lots of activities, plus a goodie bag for all participants. To register, visit http://www.centrepoint.org.uk/.