London power plugs and voltage

Check your plugs before you fly

London uses Type G, Type D and Type M sockets at 230 V / 50 Hz. Pick the country you are travelling from to see exactly what you need.

Plug types: G / D / M
Voltage: 230 V
Frequency: 50 Hz
Standard: BS 1363, BS 546

What to expect in London

London uses British Type G sockets at 230 V / 50 Hz, with fuses in the plug. Nothing else fits, and hotel rooms rarely include a universal outlet outside the bathroom shaver socket.

Power in United Kingdom comes mainly from natural gas, wind, nuclear. Grid reliability is described as excellent.

Good to know: G everywhere; D and M survive in some older buildings.

What to pack for London

A travel adapter with Type G, Type D and Type M on the socket side.
A step-down converter if you are bringing 110 V appliances that are not marked 100–240 V.
A device label check: anything marked 100–240 V needs the adapter, nothing else.