Thames tummy hits Walliams

David Walliams has shown tremendous bravery in his bid to swim the length of the River Thames.

The star woke up with a dodgy stomach as he set out on the third day of the Sport Relief challenge but showed true grit to swim another 13 miles.

His team tweeted, A total of 13.5 miles covered today - 4 short of the target but hey, at one point it looked like he wouldn't swim at all." Previously they had posted, "Not the rain, not the cold, not the squits, not nuthin could stop this man today."

And the comic did get a treat this evening, "David is in good spirits and seeing as he has burnt 27000 calories since Monday morning he had a bit of a pudding tonight."

On his own twitter David is determined to complete the 140 mile course: "Even if I have to continue swimming till 2021"!!

A 7am start planned tomorrow at Wallingford, with Henley the planned finishing point for Thursday.