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Is there a socket in another room on a wall shared with the hall? If so, it's pretty trivial to put in the new socket more or less back to back with the existing one. If not, extending an existing ring main is often more trouble than just adding a new radial circuit to your new socket. IANAElectrician and I haven't done any of this stuff since the 16th Edition, and we're now on 17.3
gbj_tester-
Annoyingly no, there's no sockets on opposite walls. Curiously every socket is sunk into an outside facing wall. The hallway is completely bereft of sockets except for a pair in the cupboard that used to house a hot water tank, and (@nev) even running a spur from there wouldn't be too much help as the cabeling would need to trace around at least one door.
However the main enters the flat via another cupboard in hallway so I'd hope it wouldn't be too onerous to put one on the outside of that cupboard.
To add to the awkwardness every wall is made of real stuff, not that plasterboard nonsence, so I'd assume adding new cabeling is a significantly bigger job than when dealing with partition walls.
Howard
I want to add some plug sockets to our hallway.
I know very little about home electrics - I'll be getting a pro in, obvs.
Is it safe to assume that where there is a light switch it's a reasonably straightforward job to install a plug socket?