Neil Williams wrote:

I cannot imagine how healthcare would be easily
devolved.

Isn't NHS Scotland a separate organisation to NHS England?

Yes, ditto Wales & Northern Ireland. There have been some problems with this
set-up for Wales because there's a lot of people for whom the nearest
hospital is on the other side of the border, hence problems with
accountability. But I had in mind devolving healthcare in England where a
lot of the regional boundaries are arbitary and some are straddled by health
trusts and the like, especially around London.