As for the NHS. Gormless McRuin more than doubled its budget and made it worse in the process. Its problem isn't money. Its problem is that it doesn't work and cant work in the 21st century. Someone needs to scrap the whole thing and start over again with a clean sheet of paper.
This I agree with, in part. Its biggest issues are a) advancements in medical science, which are expensive and people believe should be provided free at the point of use, most of which link to quality of life, which was not in the remit of the original NHS. b) a rapidly ageing population. Only about half of employed people pay any income tax at all (and about 1/3 is paid by the top 1% of earners). While it has been funded comparatively well of late, what hasn't been is social care, particularly for adults, which pushes a significant burden onto the NHS for activities which, by rights should never have been with its remit.
NHS inefficiency is probably the most well loved UK cliche but if you compare it to other systems, it is reasonably efficient, but doesn't produce as strong health outcomes as some other systems.