alistair You cannot compare the last two years spending when the 60 billion increase was to deal with covid. Click on the link I posted that shows the split between the actual budget and the covid allocation for more realistic figures:
https://www.kingsfund.org.uk/projects/nhs-in-a-nutshell/nhs-budget
Concerning spending as a percentage of GDP:
https://www.nuffieldtrust.org.uk/chart/nhs-spending-as-a-percentage-of-gdp-1950-2020
States that spending as a percentage of GDP has come steadily down since 2010.
I’d also be dubious of using percentages of anything as a figure too - if GDP comes down 50% (an extreme example to illustrate the point), then an increase of, say, 10% percent is still a gigantic pay cut in real terms. Brexit is going to have a bad effect on GDP and this will feed through to the NHS financing.
As CJ points out, costs are also going up due to a longer living population so unless the rate of increase matches the rising in costs, it’s again, a pay cut in literal pound value.