I signed on to a private dental practice about 18 months ago and I have a £30 a month care plan. I have periodontal disease which I've had for decades (probably genetic) and if I relied on NHS dentistry I doubt I'd have any teeth left by now.
For years my NHS dentist watched my gums and bone receding and blamed me for being lazy with the toothbrush, when in fact I spent a small fortune on electric brush heads, interdental brushes and all sorts of expensive medicated mouth washes to no effect. Only when I joined the private practice did I receive proper monitoring and deep cleaning every three months which has made a big difference.
If I could afford it and there were enough clinics I would take out a similar private care plan for GP services. I can see more of these appearing in the future, along with private hospitals. The state is simply incapable of providing adequate healthcare with top-down micro-(mis)management controlled by politicians.
A cynic would say that state-controlled healthcare doesn't want patients to get better in order to justify their massive centrally-funded budgets. Private providers are in competition with each other. If they don't perform their patients cancel their direct debits and go elsewhere.
It's a classic example of the fundamental flaw and contradiction of socialism and why it can never work: when you're funded according to need from compulsory taxation rather than paid on performance though customer choice, it is in your interest to ensure that the problems you are supposedly paid to address are perpetuated and made continually worse.
If the justification for your political existence is to be the champion of the poor and the sick, it is essential that you never run out of poor and sick people to coerce into voting for you. If it looks like the supply of poor and sick voters might run out, you deliberately create or import more of them. That is why the NHS and every other socialised arm of the state doesn't and never will work. The individual doctors, nurses and surgeons might want to make their patients better; the system must ensure that they stay ill.