My tuppence worth - I actually totally understand why pay might be frozen in the nhs (including my own pay), despite this being the hardest year ever.
First, I do think nurses / doctors in the NHS (myself included) pretty much have a guaranteed job - there are huge numbers of vacancies in nursing.
However, when the private sector is doing well, we still haven't had a decent pay rise. So while I might understand that this year / next year etc I can't get a pay rise, what we do see is that even when the economy is doing well, we don't get a pay rise either. I think that's what bothers me - we get penalised either way.
As an example, my DH earns double what I do in the private sector. But he doesn't manage anyone and his actions at work might cause trouble, but no one will die because he doesn't do his job. I manage a team of 30+ who are responsible for providing care for the most vulnerable members of society. What sticks is that in a few years as the economy somehow gets back on its feet, the NHS will continue to be in austerity, forever trying to cut while ringing out as much as possible from its staff.
If there was a clear plan, that if the economy grows by x% then the public sector will see pay rises, then I think less people would be upset, it's the fact that we all know that in 6 months when everyone is vaccinated NHS staff will go back to being vilified, useless, uncaring in the public eye.
We see it already - look at posts noting how great swathes of the NHS were sitting around with nothing to do - I've yet to meet anyone who hasn't been busy. We had a quiet month right at the beginning of lockdown because people were scared to allow HCPs in their house. Now, our referral rates are higher than ever, on the backdrop of staff being human beings and having the same issues with self-isolating, children's bubbles popping, being told to isolate via track and trace with no extra resource to meet our service demand.
Honestly, I won't be surprised if there is a mass exodus of nurses in the next 12 months - maybe they will be searching out all the parts of the nhs that were quiet during lockdown in preparation for which ever next crisis hits the NHS.