UK 'dopers...tell me your thoughts about the NHS

You’re not “simply” doing anything. You seem to have included some of your very own “simple” maths - creating a GDP expenditure unknown by some measure to the rest of the world, including the OECD and other internationally respected independent analysts.

I hope you can make sense of that.

You seem preoccupied with GDP, but bob++'s post and my response to it were talking about salaries. He said that 10% of salaries (not GDP) in Switzerland went towards healthcare, implying that that was a higher proportion than in the UK. I argued that roughly the same proportion of salaries in the UK went towards public healthcare.

Ignore me - sorry.

I did some back-of-an-envelope calculations on this in a similar thread. Unlikely to be 10% of any income below stratospheric levels. Don’t forget corporate taxation and employers’ National Insurance contributions.