I think you mean a DP switch.Thankyou once again! Yes each appliance will have a single socket, and a double switched socket as a spur.
Yes, There are several extremely knowledgeable people on there - as you would expect - but there are others too.Most the info I read about no double sockets was on the iet forum.
Yes.Thanks I will purchase a 47mm back box. My understanding is that the ring main will enter switch one, then connect to switch 2 by the neutral and live wires only then again from switch 2 to 3 and finally rejoin the ring circuit from ring 3 with earth.
There will be no earth connection on the switches.The earth's will be looped to the back box and into their corresponding terminals.
Just connect together the earth wires on the ring in and ring out and the earth wires in the socket and three appliance socket cables.
If that is too many for the terminal in the backbox put them all in a connector block with another wire to the back box (and the faceplate if it is metal)