Hi
The problem was eventually solved! There was a L to E fault in a socket in the hallway. Probably due to me pulling the socket away from the wall when I decorated a month ago. I obviously didn't double check the connections when i screwed it back together.
It still doesn't explain why, when...
The kettle, microwave and fridge freezer keep tripping an RCD. The upstairs sockets are fine - plugged in lamps work even when plugged into an extension lead from an upstairs socket. However when I plug in the kettle to the same extension lead it trips the RCD. The same applies to the microwave...
