@Ironoaks I asked DD about the supervisions issue last night. It does sound as though what you have read is true. Her take on the situation is that supervisors are underpaid for the time it actually takes to plan, teach, mark and review the work of their tutees, which is why they are refusing to teach them. Some students in higher years are being offered larger group sessions, but having attended them herself as an undergrad, she said they were a very poor substitute for one-to-one or two/three-to-one supervisions.
I doubt that will be the case on here as everyone seems to be lovely, but she had already decided not to do any supervising this academic year so she can focus on her PhD so please don't pile in on me or her - I support her reasoning and stance. She explained that to do a supervision, she has to leave the lab, cycle to the college, teach it, cycle back, then mark the work and put comments on it, which massively breaks up her day and means that in an 8 hour day, she might only get 2 hours of lab work done. She has to invoice for her time in arrears and colleges can take anything from 2 to 8 months to actually pay her. Last year she got as far as a Letter Before Action in the Small Claims Court to one college before they coughed up. Instead she is going to carry on with demonstrating, because that it paid monthly and done in chunks which she can plan lab work around. She has already joined the union and will not be breaking any sort of strike.
I realise that this is going to upset a lot of people, and for that I am sorry. It seems utterly ridiculous to me that Vice Chancellors of some institutions are creaming off mid-6 figure salaries whereas post docs can't afford to rent in Cambridge (the case in her group). Until experts at all levels of education are properly remunerated, I cannot see the situation improving.
A long day at the wheel awaits as I'm heading home today. Again, I am sorry to bring this up. To the student who was cross that this is not a forum for students, surely the name of the website is a clue - it's a site for parents. Obviously, if they are a parent who is heading to Oxbridge to study, kudos to them & best of luck. If not, there are other much more relevant places on the internet to get information.