Best place for old folk

They're in France currently...long story but they're British, moved to NZ when I was a little one and then retired to France (close but not too close to my Mum's family).

They're now at a stage where mobility is an issue (they live in really rural corner and not confident drivers) and their ropey French means that navigating situations (particularly healthcare) is getting more difficult. They may well end up in Colchester but would imagine if they do head down that path they'll find their living arrangements have to downgrade a lot.