Going back to BigChoc's musings about Germany; she is right about someone taking the lead on coming out of lockdown, and Germany is certainly the "best" placed country to do it, but I'm not sure they will want to be the guinea pig.
It's interesting how out perceptions change - at the beginning of the Italian lockdown I remember looking at the tv and wondering how the hell they could force people to stay home; now in many countries that is the norm. The question is whether everyone will immediately go back to normal when rules are relaxed, or if people will, willingly, or even voluntarily, take it slowly.
I think there is a risk in the UK that relaxing rules will mean instant abandonment of the rules. I'm amazed at the number of people in the UK who want the schools back for example; in Ireland there has never been any thought of schools being back before September.
Germany, with it's population of well-behaved rule-followers (or at least that's how we perceive them
) would be great examples for the rest of Europe. If they could relax rules slowly and steadily and consistently, without danger of a resurgence of the virus, the rest of us could follow. The trouble is that it would take time, and I'm not convinced many countries will be able or willing to go at the slow pace that would be needed to make sure it was working.