Walliams vs The Thames Day 2 | Sport Relief 2012

After a challenging start to the day David picks up speed thanks to the incredible support from the public. But as the sun sets and the temperatures plummet will David's gruelling schedule prove too much? To follow David's progress visit http://www.sportrelief.com/walliams and to sponsor him visit http://www.sportrelief.com/swim As the nation celebrates the biggest ever year of sport, the entire country can join in the fun with Sport Relief 2012 from Friday 23rd to Sunday 25th March. Enter The Mile: http://www.sportrelief.com/the-mile Like Sport Relief on Facebook:   / sportrelief   Follow us on twitter:   / sportrelief