Ok my guess is Wally.
Is it Toby. Aka the captain. Trevor Bannister
Could it be Tom??
It looks like Brian Murphy on the bubbles?
MARINA :-\
Audrey Craig???? ???
Brian Peck who appeared in 'An apple a day' ?
Is it the woman who played Truly's neighbour??
Since I seem to see a tache" I'll guess Keith Clifford aka Billy??