OK now we are getting there. Which part is explicitly forbidden,
running the UFH from the ring main or the amount of load?
If the latter then my cooker and hob together on one circuit (9KW)
would fail if the work was done after Part P was introduced and I had
to get it inspected. If you are saying the former then I will have some
serious words with the installer as I would not of had UFH if I needed
a seperate circuit, the only reason I got it was because we needed to
get the floor levelled anyway prior to tiling so I thought what the
hell. To re-iterate it will be a complete pain in the butt to run a
seperate circuit and will involve dismantling a huge cupboard to some
degree, that said looking likely I may need to do this now! SWMBO will
not be happy its in her dressing room.

Sorry to ask all these questions, just want to get everything straight.
Cheers Christian

Richard