Alongside the other suggestions there should be one or two Quality Improvement posts along soon if you want to stay in the NHS, the QI folk I've met so far are some of the most sensible I've met in my last two NHS employers. (Yes, I know, given how utterly baths*t most of the NHS, and indeed the UK, is right now that's not saying much.)
Here's a thought from extreme left field - what about a doctor on a cruise ship? Arguably not as restful as some people might think due to the demographics but definitely different!
I know there's this lovely idea, often from people who might not have lived there, that moving somewhere rural will be a peaceful idyll, but the coast and country side have their own issues, also much worse after COVID.
Medical Education, Writer, Pharmacy Information Officer would probably be reasonable matches. I don't know what your pension options are, any chance of taking it early albeit at a reduced rate due to ill health?
Wishing you all the best.