Oh, OP, you're in for a massive shock when/if Labour get in and the NHS remains in the same or even worse state than it is now.
The NHS has been in need of major reform for years. It's not under-funded, the funds are poorly managed. The biggest problem is no one wants to have the conversation that needs to be had. We treat the NHS and its workers (don't get me wrong-the workers work very hard and should absolutely be praised) as if it is beyond reproach and this sainted institution that cannot be criticised.
Instead, we just blame the government and say they're the ones destroying it by not funding it enough. You can throw all the money you want at it-but if the system is broken and in need of reform, until people admit that, it's not going to massively help. I think some study came out that showed that we spend per annum 44% (it was in the region of 40% so not sure of exact figure) of our GDP on the NHS.
This is more than other European countries with similar system to ours that actually have a much better, more efficient service with much better health outcomes for their patients.
This is not a problem of funding. This is a problem of mismanagement of funds, and the fact that the NHS has not evolved with a changing and ever-evolving society. And don't blame Brexit-the problems existed long before that came into being. And we've been hearing about the NHS being in crisis every winter since the 90s-when guess who was in power? Labour.