Thanks for your informative replies, much appreciated. My CU whilst being new seems to be full and whilst I have the ceilings open its easy to get a cable installed. Being only a "two down" house I guess extending the ground floor ring and lights will be ok. Whatever method is used I want any...
I wish to lay in a cable between the consumer unit and a wall where a one room ground floor extension will be built. It wont be connected till required next year. The extension will require one ring for power sockets, one for lights and one for external electrics and I expect the electrician to...