Thanks for that. Yep, I agree it is a strange one. I can't figure out why all upstairs sockets are one cable fittings. I lifted a loose floorboard on a socket I want to add a spur to. Underneath it was just a supply cable into a junction box, then to the socket.
I'm tempted to treat as a...
The people fitting new bedroom units in 2 weeks have told me to arrange a power cable to the top of the wall to use as power for the bedroom units lighting. I cannot come from the loft as it is floor boarded.
Advised it was an easy job - open up a socket, add a fused switch spur with a 5amp...