Hi, I'm looking to add an extra 13A socket which will be used to power a projector. I currently have: One double 13A socket on the ring which has previously been spurred off to a fuse, which in turn goes to one single 13A socket. At a guess I think the previous owner has done this to power an electric fire - which has long gone. I need to retain all of the existing sockets (in fact I may switch the single to a double), and add one additional socket which will go in the ceiling void between down/up stairs. I'll then plug my ceiling mounted projector into it. I was thinking to extend the initial 2-Gang 13A socket to a 3-Gang to comprise of one double outlet and one blank, in which I'll crimp my new leg to maintain the ring. Here's a sketch to show the would-be new wiring. Am I on the right track? Or, can anyone suggest an alternative way?