[neilo]

I moved a box myself with a bit of cable and a connector. It's very easy to do but if you can't do it see if you have a friend or someone in the family who could do it. A hundred pounds for a box move is totally ridiculous unless money is no object.

But don't try to move any electrical sockets yourself or move the gas meter or anything like that. Those things should be left to the experts. But a box move is a very very straight forward DIY job.