Re needing documentation, Britain's lockdown sounds like it's rapidly becoming more illiberal than Austria's - I've seen reports of multiple UK police forces trying to go beyond the law and impose additional arbitrary restrictions (by suggesting that their daily exercise is limited to 1hr, which it isn't, or that they can't move so a more walkable location in a car in order to take it, which they can). I think that's a real problem, because the biggest challenge of the lockdowns is going to be holding them together for long enough. But then, the Austrian lockdown basically seems to be effective, I'm hearing very few reports of anyone breaking the rules here, whereas the UK seems to have more of a vocal minority who think it's all a conspiracy or something.