
The photos above and below come courtesy of The News Of The World who reported on filming in the Thames!

They say:
David, 38, dragged himself out of the river's murky water during a scene where his villainous character, Lord Pomfrey, sinks in his boat. He then had a tussle on the shore with co-star Christian Brassington, 26.
An onlooker said: "David was in his element. It must have been freezing but he didn't seem to mind."
Evil Lord Pomfrey tries to stop the St Trinian's schoolgirls from finding a stash of gold.
The movie, which also stars Girls Aloud's Sarah Harding, 27, and Rupert Everett, 50, as headmistress Miss Fritton, is due for release on 18 December.