Legal Implications + What Happened To The Girls?
Murder/suicide? Prison time for Simone? It's difficult to imagine that they would escape the situation unscathed, although I suppose you could rationally argue that the shootings were in self-defence. George pretends to wash his hands of the situation, but there's no way (legally or emotionally) he could distance himself that easily.
He was seen in a brawl with Anderson in Brighton that day and is a known former associate of the Michael Caine character, and probably would have been investigated by the police. Also, there was a third bad guy pursuing them (as seen during the chase at the pier), and no mention is made of him later on. He wasn't killed (that we know of) and that's a bit of a loose end.