Apparently my teeth are "not bomb proof, but very close", said I should come back in a year to 15 months, so I think I stick with having a Dentist 300 miles away, as it's got to be cheaper than London and I think it would be difficult to find another dentist as nice as the one I've got up here.
Got him to fill out my new passport form for me while I was there. Had the photo done in a shop on the way there. Glad I paid extra to do that, rather than using a machine, as apparently they would have rejected my photo if I'd been wearing my glasses anyway (as of course I'm going to take off my glasses to walk through customs - obviously!).
Came home and had a HOT cup of tea :-)