David Walliams forced to swap his "budgie smuggler" swim trunks for a wetsuit as his skin begins to turn blue

David Walliams forced to swap his "budgie smuggler" swim trunks for a wetsuit as his skin begins to turn blue

David Walliams forced to swap his “budgie smuggler” swim trunks for a wetsuit as his skin begins to turn blue

5:19 PM on 5th September 2011

Plunging temperatures: Greg insisted David change into his wetsuit at the first stop in an effort to stave off hypothermia and admitted that the water is much colder than anyone expected Plunging temperatures: Greg insisted David change into his wetsuit at the first stop in an effort to stave off hypothermia and admitted that the water is much colder than anyone expected

Greg insisted David change into his wetsuit at the first stop in an effort to stave off hypothermia and admitted that the water is much colder than anyone expected

Back in the swim of things: David gets back into his stroke but this time in his westsuit

Back in the swim of things: David gets back into his stroke but this time in his westsuit

Watchful eye: A flotilla of canoes and small boats keep watch over the Little Britain star

Watchful eye: A flotilla of canoes and small boats keep watch over the Little Britain star

And he

And he”s off: David Walliams takes his first strokes in his attempt to swim the 140mile length of the Thames for Sport Relief

Powering through: David hopes to swim about 140 miles to finish at Big Ben in the heart of London in just eight days

Powering through: David hopes to swim about 140 miles to finish at Big Ben in the heart of London in just eight days

Support: Walliams

Support: Walliams” wife Lara Stone was on hand to send her man off into the water

Off he goes: The comedian wades into the Thames at Lechlade, Gloucestershire where he kicked off his epic charity swim

Off he goes: The comedian wades into the Thames at Lechlade, Gloucestershire where he kicked off his epic charity swim

Cheers mum!: Comedian David Walliams kisses his mother Kathleen as he begins a 140 mile swim down the length of the river

Cheers mum!: Comedian David Walliams kisses his mother Kathleen as he begins a 140 mile swim down the length of the river

Come on in, the water

Come on in, the water”s great!: Walliams will face many dangers on his route which stretches 140 miles into London

Admirable challenge: David hopes the public will turn out to cheer him on along the route

Admirable challenge: David hopes the public will turn out to cheer him on along the route