The plug timers and bulbs work well. Top marks
The radiator valves if you have to use the little plastic inserts are poor on the vertical fittings, take ages to tighten rather than fall off and the ones that fit horizontally fall off if a feather brushes them. I took all the vertical fitting ones off, they spent more time on the floor anyway. I'm sure if you can fit them without the plastic inserts they'd be fine.