Meyerowitz Made Me Do It
I was actually trying to photograph the architecture when this scene unfolded in front of my eyes, as my finger hovered over the shutter I heard Joel Meyerowitz in my head shouting "now!" so I did. I like the way they are each doing something with their hands, and each person is of a different ethnic origin, sums London up well.
If you're not familiar with Meyerowitz, here is a great example of his use of light, shadow and colour:
Copyright Joel Meyerowitz