In uk.d-i-y, maddening wrote:

Sorry, meant to say - near Carmarthen.

Very nice!

Yeah, that sounds likely. So is it not worthwhile even contacting
Western Power in the first place, ie cut them out of the loop
completely?

I'd say so: they're likeliest to tell you either to get an electrician
yourself, or offer you one of "theirs", who will most likely be
competent, relatively local, and earning somewhat under half of what
you pay Western Power for his time. I'd prefer to go direct and find
someone local who'll be around next time you have a need...

Stefek