Just to answer some questions about the state of things now, 1 New Kettle, 1 new socket 2 pole for the kettle point so I could reasonably eliminate those. Both ring mains check out with good earth leak figures , respectively, 999 M ohm and 544 M ohm.
The ring main in question has now been split with another trip (b) type so now what is in the kitchen and wash room is the cause.
All wall sockets are 2 pole, and that leaves the Boiler connected and am unable to check as hard wired and the boiler tank upstairs has a control circuit again hard wired. This leaves a small fridge which I can isolate and a Fridge/freezer which is hard wired with a wall neon on/off switch which again I cannot test. I would have to remove fridge/freezer out of it's unit to check which i believe is a socket and plug behind unit. I cannot see myself lifting this out alone.
All a bit of a puzzle and one which draws me back to the fridge/freezer and the boiler and tank c/unit.
Clive, John, I will replace the neon type switch blocks complete as and when I can get out to find some.
Edited By Clive Hartland on 03/01/2016 17:06:02