I agree that this sort of testing, once the tests are more effective and show less false negatives, plus if they can evidence that the antibodies grant immunity, will lead to proper opening up of society again.
However, for international travel, you'd need this testing to be effective on both sides, and for both sides to trust the testing being performed.
Hence why I think that international travel will be the last thing to open up properly for non-essential travel. But who knows what will happen really.
On the topic of people sticking with the lockdown, in Ireland, where their first lockdown measures came into force a week before the UK, the seismologists have been tracking activity and it has been increasing in the last week or so. I know that the UK seismologists confirmed that there was a sharp decrease a few weeks ago (
https://www.theguardian.com/science/...mologists-find) . Would be interesting to see what it stands at after this weekend (good weather I think again?) Should be a good indication of whether people are sticking to it, rather than just saying that they support it..