London!!!
I’ve been to the 180 show at the Strand 3 times now. Lots of good video art, good mixture of weird and accessible. Has the 6 hr film of the National playing Sorrow (which I love)
The Christian Marclay 24 hr film at the Tate is also great, especially if you’re a film geek
Can pop into the Jenny Holzer show while you’re there as well