Thanks all for the helpful comments. I know what some mean by a lean but actually it is not far off vertical. It is a bit of an illusion because you are looking diagonally across the river here. I chose to get Big Ben exactly straight up and let the House of Commons lean very slightly inward (though about blowing it up altogether but thought better of it
)
I like the idea of using a blur to make the outlines more of a glow, I'll have a look at that, thanks.
Cheers all, I'll experiment some more
Rob