I have a double plug socket with an extension cable run through the wall into the lounge. I’d like to add a double socket as a spur from this existing socket to replace the use of this extension cable. There’s already a whole in the wall for the cable and I don’t want it chasing into the wall I’m wanting a surface mounted socket which I will supply. Works will have to carried out by a qualified electrician with a minor electrical works installation certificate supplied on completion