fwiw, I did find a couple of 4K 32" tvs on Amazon UK but they don't seem no be common. Would you really get any benefit from the step up from 1080p with that screen size anyway?

I think our (Sony 1080p) tv is 42". I don't think it will be replaced until it breaks down. I think we would go a bit larger next time, maybe to 50" - I don't think we'd want to go bigger than that.
Ours has Internet but it's almost never used. Our connection is too slow and we'd never be subscribing to services like Netflix.

I was looking at even smaller (24") tvs the other day. Dad has become more unstable and erratic at bed time. After a very close shave a fortnight ago, I decided I could no longer move him safely at that time. We are using the temporary council service for that at the moment but a permanent provider could mean him going to bed at 7pm rather than his preferred (and which we certainly wouldn't get) 10pm.

I did put a (I think) 12" tv in there on another occasion when he had to go to bed early but it does seem a bit small viewed from the other end of the bed. I reckon I could use a wall mount with an arm and have a 24" tv toe end of the bed and feel that would be nicer for him. I'll have to see what happens with future arrangements and what dad finds he wants first.