I live in Dalston, which is in east London, which seems to have turned into pop-up central of late & yesterday I went to check out the Urban Fog pop-up tea house/ installation.
It was great, and made me feel like I don't turn things into installation pop-ups as much as I should! It is housed in a pre-planning permission building, where the interior has been recreated into a gauzy/ hazy tunnel-like space, with little triangular seating pockets where you can sip your tea from jam jars.
The experience is much better than my description. it's on til the 28th of May, and I would visit soon.