Just thought I'd end the conversation here. Thank you all for responding.
As I said, happy to get alternative quotes, if you can send me a PM ill give you the details.
5 Bed
2 Bath
2 Receptions
a WC
Extension (Kitchen)
Outhouse (Boiler/Cylinder and Kitchen)
All new wiring for main house and new sockets, light switches, light fixtures.
New CU for main house
New CU for outhouse
It's a big job. The house is completely gutted now, so no need to worry about wiring runs (should be easier). The ground floor has a crawl space about 3ft and enough of the floor boards off to make wiring runs easier there.
All plaster is off the wall, and ill have the builder do any chasing etc...