How do I bathroom / kitchen / extension? etc.

We went with (not quite so cheap) white after struggling with finish matching. Don't know why I didn't go straight to white, was very happy with it just disappearing into the white wall. We had UFH too, but it was a sort of wet room so helped with keeping the floor dry.

UFH in bathrooms - who has it? Do I need it?

Had it at our old place - but it was a downstairs bathroom, extended from the kitchen, which also had UFH.

It doesn't seem to make sense to have it, as bathrooms are occasional rooms, whereas UFH is an always on heating system.

If you want warm, bathrooms when you bathe / shower, just have a big towel radiator teed off the the hot water.

UFH in bathrooms - who has it? Do I need it?

It feels great underfoot on a cold day. Any reason why you wouldn't want it? Maybe if the insulation is so good that the floor always feels warm?

Ours is electric and separately timed to our CH, which is really annoying. The bathroom has a towel radiator too, but it's no big enough to heat the room. I think the intention of the design was that the UFH heats the room, the towel rad just does the towels.

Not a towel radiator but I do have this towel rail bnib plus matching valves which was surplus to my requirements and I'd take a reasonable offer on if you're interested?

https://victoriaplum.com/product/the-heating-co-aziz-chrome-wall-mounted-heated-towel-rail-450-x-600

Otherwise they have a few options on their site

Lusso stone , just under budget
https://www.lussostone.com/radiators-c14

towel radiator

One thing I would say, is that if it's for a family bathroom then get the biggest one that will fit. You know what get two of the white Screwfix ones. It'll be worth it not to have to play towel tetras.

we are looking at rads at the moment and not got to the bathroom ones yet but noticed you can get an ordinary tall column rad and have matching towel rails and robe hooks fitted, it was on bestheating.com and the rad was milano aruba.
they come in lots of colours including some mettalics.

we got one of these and got it sprayed orange. service was useless from this supplier so would source the rad from elsewhere. really nice rad and mega warm in a 3 x 3m bathroom https://www.designerradiatorconcepts.com/brands/eucotherm/towel-radiators/eucotherm-fontanus-designer-towel-radiator-1616x600mm