I have recently moved into a house that has had very little work done on it since it was built in the early 60's. There are a total of 3 plug sockets downstairs and 4 upstairs. This may have been plenty for 1963, but is a little low for today's lifestyle.

The house does have a fairly new consumer unit so I'm not worried about having to replace the old fuse box that had one big on/off switch for the whole house.

I do want to increase the number of sockets, how should I be adding new sockets to the ring circuit, adding a spur from the existing sockets or extending the ring circuit to include new sockets?