Just to round this off.
I bought a voltage stick from maplin and with a little switching on and off located the socket supply and added in a junction box in the crawl space so easy to get to. It is on rcd.
Socket now Live and powering our computer etc rather than the trail of extension leads...
Thanks for quick reply
Thought that it would probably be a no go for lighting supply just wasn't 100% as the wires are all 2.5 and so capable.
Sorry on the 'end' comment I meant which of the 2 ends of each of the 2 rings, which clearly doesn't matter, as long as it's the right ring.
Anyway...
Hi
Would really appreciate some advice.
I am looking to add a socket in a ring for computer bits and pieces.
We had an extension build on the house, which has left 4 twin and earth cables running through a loft space right past where I want to add the socket. These are 2.5mm and come from the...