Campanula poscharskyana "Blue Waterfall"...

...I think. It grows out of walls, including the walls round front gardens in my street. I've been taking photos of it for the last few days, and decided it had to be a blip, so I could move onto something else!

I went to see a Russian film today, Leviathan, which was excellent, but hardly a bundle of laughs. In keeping with the film, T and I had two bottles of vodka each afterwards to drown our sorrows.