This is a great photo! I love it. My only suggestion is...while the tonal range is generally superb, the face of Big Ben is too white. It distracts from the rest of the image, which is full of little details. Try "burning" the face of Big Ben in Photoshop to darken it a bit, and I think you'd like the result.
A cracker of a post too...this looks a lot like IR!...
Love the format too!...
Nice one pal..