hi folks wiring a conservatory comprising of 4 double sockets 1 external double socket, 6 downlights (customer supplying) and an external light customer also supplying. i am able to break into the ring circuit on other side of wall and already have rcd protection, how much wud u's charge for installation fitting an certifying, its just this is now my second year working for myself and i seem to be flat out sometimes but not making much and other times there is very little work at all