I don't think the mood music in the UK is to leave the EU right now; in fact, a common sentiment towards Greece right now is vindictiveness, which is rather ironic, since the EU is meant to work collectively for each other. But if Greece is punished even more, and we have scenes of mass starvation, I'm not sure what the reaction would be. More blame for Greece, sure, but I wonder about the feelings towards Germany and their banks. Scary stuff, really.