i have built an office in my garden (glorified shed), which is fairly close to the house. max 10m away. i have an existing external grade socket, which is fitted with a breaker. i do not know, while typing this, whether this socket is on a ring main or is a spur off the main ring etc...(i am also not sure whether that last sentence makes sence!). can i spur off this external socket with armoured cable to run under ground into the office to a consumer unit and then run another ring main from the consumer unit for switches and a lighting circuit with two-way switching. with the building being used as an office, i will probably want to install at least 6 double sockets and then a small lighting circuit. is this possible? do not panic, i will not be doing the works, i will be getting a qualified electrician to connect up and approved inspectors will definately make an appearance somewhere.
many thanks in advance for your advise.