The problem the nurses have is they've been to nice for far too long, and just sucked it up in favour patient care, obviously this is totally understandable. The problem is they've effectively been their second worst enemy after the government. This is in both regards to pay, and working with extremely low numbers, and not enough funding for what the public expect. Every time the Tories took a load out of their rucksack, the NHS workers have done what they can to pick it up and put it in theirs, even though it's broke their backs.
They should threaten to go on strike, it would cause absolute carnage but it's carnage anyway, and will only get worse if they don't. They're going to have to strike sooner or later to get what they want, which is probably still nowhere near what they deserve. They need to do it under this government, ideally with whoever is in after September. This will get the best result for them, as they will get something out of it, and it will also pulverise the Tories. Then Labour can come back in and start to fix things (but that will be a long slog). At least then, even if the Tories did win in 2025 or 2030, then they would end up taking the **** out of the NHS less (hopefully).