[filiphorvat]

To be fair, the CEE 7/7 plug will work almost everywhere in the EU, not counting the UK of course.

https://en.wikipedia.org/wiki/AC_power_plugs_and_sockets#CEE...

[wrboyce]

If you use a screwdriver or similar to open the socket covers (shove the screwdriver into the earth socket) then you can indeed use a CEE 7/7 in a UK socket.

[e_proxus]

I used to do this with my keys every time I traveled to the UK and forgot my adapters.