Curved arched or vertical?

In London again and I sometimes try to take a blip from where I am toiling which is likely to be a place that the public cant get access to!!

It has been snowing through the night and this blip shows the snow on Waterloo Station roof, the old Eurostar terminal and, in the background, the Shard that is now starting to dominate the skyline and London bridge.

So....Curved, arched or vertical? unusual blip