Long exposure train boredom

It rained all day so we didn't do anything with our final day in London, although it was nice to just lay about. Photo opportunities were restricted because of this though. To pass the time on the train back, a bit of camera maintenance and hand-held long exposures like this one helped out. I don't think this would have worked in daylight or proper night, but the last remnants of the day's light worked I think. Minimal.