Sockets in Liechtenstein: Types C and J, supplied with 230 V at 50 Hz. No surprises on voltage: Liechtenstein runs at 230 V, the same range as at home in the UK.
The same socket system is used in Switzerland, so one adapter covers all of them. Travelling further to the Isle of Man, Cyprus and the United Kingdom means a different adapter. In Europe, 2 of 50 recorded destinations use exactly this combination.
Protective earth
Grounded and ungrounded sockets may occur
Liechtenstein has sockets with a protective earth (Type J) and without (Type C). A plug that fits mechanically does not guarantee earthing.