Can anyone please help me in regards to putting a single mains socket into a loft. The story so far................ i would like to install a hanging ceiling backet for a LCD tv in the bedroom & running the hidden cables back into the loft. Firstly its seems that there are no mains cables, just lighting cables & a light swich in the loft. Can i run a cable from the loft down the inside of the wall & 'TAP' into the single socket there. would it just be the case of doubling up the wires already in the wall socket.