To me, the lamp is competing (and winning) over Big Ben, especially since that thick, dark branch is pointing right to it.
I feel like this shot would be absolutely amazing had you focused on the lamp on purpose, and unfocused the background. That would make this much more original, whilst still including Big Ben in a subtle way.
__________________
7 d | g l a s s | n e u t r a l d e n s i t y | l i g h t | p e r c e p t i o n
|