Don’t Look Back: Malcolm McDowell bit part?

Thanks to Andrew Kelly:

“I caught the More 4 screening of Don’t Look Back last night (22 July) and was struck once again by the possibility that one of the others in the drunken confrontation in the Savoy suite over the glass thrown from a window looks as though he could be a young Malcolm McDowell, the actor probably best-known as Alex in ‘A Clockwork Orange’.

“Can anyone give a positive identification of the man who asserts: ‘You're a big noise... I'm nothing’ etc toward the scene's end?”