TV PR Ian Johnson will be celebrating his birthday today by staying out all night in east London and waking up in the gutter. Before you get the wrong idea, it's all in a good cause – he's joining 450 others sleeping rough at Old Spitalfields Market to raise money for homeless charity Centrepoint. Those roughing it with Jonners include Janet Oakes and Heather Hampson of indie producer CPL - they talked him into it, apparently - Loose Women presenter and Centrepoint backer Lisa Maxwell, and DJ Sara Cox.