Part M of the Building Regulations states that in new buildings, switches and sockets should be located (centre line) between 45cm and 120cm above floor level
Answered by Rupert, Electrical Safety Expert
Part M of the Building Regulations states that in new buildings, switches and sockets should be located (centre line) between 45cm and 120cm above floor level. However, for existing buildings the heights only have to be located in a position that is no worse than the rest of the house, not necessarily following Part M.
If you are having your house rewired, you should always use a registered electrician. You can find one in your area here.