The problem is, that under the current system, nurses are leaving the profession. I'm not trying to advocate for any particular solution, but can you at least acknowledge there is a problem that needs solving.
I'm also interested to hear what you think the solution is as well. My personal opinion is just that the NHS needs a cash injection, and any increases monetary costs will more than pay for themselves in the long term. As a money-starved healthcare system leads to people out of work more often, whether by dying more, less able to get treatment, more mental health issues, or simply increased stress due to the uncertainty a flaky healthcare system has - which in turn just leads to a massive drain on the economy which is far larger than what it would cost to actually fund the healthcare system.
If that cash injection requires a tax increase, than it is necessary IMO, as the lack of taxation is then essentially a health deficit which will come back to bite everyone in due course if it is not addressed.