My understanding is that once in the clinical years, medical students are no longer governed by the University in the same way. And that it was a central decision to close medical schools to be able to redeploy teaching staff to front line care. It certainly felt like this. All through Friday afternoon DD and her friends were being reassured that the Academy would stay open as long as possible, and then in the early evening, they got an email saying it was closed with immediate effect. There are plenty of individual tales of havoc. Of international students not being able to fly home, of British students in Europe struggling to get on any flight. Even with a huge amount of discipline, watching You Tube videos is not going to make up for actually seeing patients.
I assume Universities are making individual decisions, based on local circumstances. LSE was one of the very first. Partly because most teaching can be done on-line (thought the great strength is the learning gained from being in a very diverse student body) and also because only 25% of students come from the UK so others were starting to scatter. Plus they start early in September and have a relatively short summer exam term, were not affected by strikes, and so much of their teaching would have been done. Durham may be worried that the proportionately large student body would put strains on the local health facilities (I don't know) or had other concerns. The point is that each University will have made its own decision.
DS is now in the US which is very odd. UGs were sent home overnight, and everything has gone on line. The supermarket was stripped completely bare within a couple of hours , and there is talk of lockdown. So from complacency to panic within a few days.
The common factor is that all we can do is sit and wait and hope for the best. When my mother had a fall and was diagnosed with dementia, the GP said I would need to make decisions. These might later prove to be good decisions or bad decisions, only time would tell. All I could do was make the best decisions I could in the light of the information I had at the time.