David Walliams sets off on Sport Relief Thames swim

Little Britain comedian David Walliams has begun his swim along the River Thames from Gloucestershire to London in his latest fundraising effort.

The comedian is taking on a 140-mile (225km) Big Splash Challenge for Sport Relief, which is expected to take eight days.

To support Walliams visit his pages on the Sport Relief website.

To learn how to swim, or how to improve technique, visit the Big Splash website.

  • Swimming