There's a spot at Southbank which produces brilliant reflections just after rain. There's something about the short strip of pavement on the south side of the river just west of Princes Bridge. It doesn't take long for the water to dissipate and the reflections to fade when the rain stops, but if you get the timing right any you're lucky with the light, it can be quite spectacular. There's also good shelter under the bridge and around the Arts Centre, so you don't have to suffer too much for your art by getting soaked.
Well, today the timing was good for an after work shoot, but unfortunately the light wasn't great and the sky fairly leaden. As it was the commuting hour, I concentrated on cyclists of which there were plenty. There was also a lot of rowers hitting the river from the boat sheds, so I played around there for a while as well. I'm not sure the direct overhead perspective of the rowers from the bridge provides the best image, but I only had a wide zoom with me so it was the best I could do. It was also quite windy so the river was chopped up - I must get back and try it again on a still day with a longer lens.