God Save the Queen:

LONDON (Reuters) – Pop-up toilets that rise from the ground at night will be installed in central London in a bid to dissuade late-night male revelers from urinating against walls and doorways.
The self-cleaning telescopic urinals, which Westminister City Council hopes to have in place by autumn, will emerge from under the ground and be retracted in the day via remote control.
“By moving them underground it means they are not an obstacle in the day,” a council spokeswoman said Monday.
The council has already deployed mobile urinals which have been placed on the streets Friday and Saturday nights to cut down street urination.
The telescopic toilet is currently only available in Europe, Westminster council said.