|Pollarded London Plane trees behind Tate Britain. 8 January 2013.|
They are London Plane trees, a hybrid related to the American Sycamore, and they manage very well in a polluted atmosphere. I have read that this is because they shed their bark every year. You can see the patchy effect this creates on their trunks.
|London Planes and a view of Lambeth Bridge. 8 January 2013.|
The bridge is guarded by two pairs of obelisks. I always thought their finials were pineapples, but according to Wikipedia they are pine cones. The London bus on the bridge is advertising the film of Les Miserables.