Doing a decorating job at my daughter's house and removed the sockets. I found that one of them had an additional neutral. From looking at the signs of channelling in the walls I believe it is from the wall lights circuit. Obviously the previous owner took the live feed from the switch and the neutral from the socket.
Incorrect - yes - but I can't see it as being dangerous as all the neutrals are connected to a common bus block in the consumer unit.
Any views?
John