The numbers you cite represent a real-terms fall after inflation - despite the population growing about 8% in that time - AND a reduction as a proportion of GDP.
> It must be nice to be able to spend the same money twice. [...]
Meaningless.
> People dying right now waiting for ambulances. [...]
Yes, well observed. I do know that. The fact that more do not is frankly miraculous - and the fact that many do right now is more testament to chronic underfunding of other public services, especially elder care and social services.
> So your plan is to put all your eggs into one basket (i.e. state-run health care)
No. You have invented that line of thinking. In the UK state and private healthcare coexist. The only way to put all the eggs in one basket would be to erase the public provision of services which, in case you hadn't noticed, is exactly what the conservatives are trying to do.