Head to any cluster of commerce on a sunny day — the City, Canary Wharf, the 'More London' development next to City Hall — and odds on you'll spot someone with a hulking great camera snapping away, perhaps lying on the ground with lens pointing skyward.
Angular lines; the play of light on monochrome surfaces; the reflection of other buildings or water — photographers are drawn to areas where lots of glass and steel provide endless variations for interesting images. Perhaps it is fitting that modern architecture, whether in the form of skyscrapers or shopping centres, is so heavily photographed, because glass and steel dominates so many London viewpoints.
Familiar structures, chiefly Richard Rogers's Lloyd's of London building, inevitably make an appearance here, but many others provide arresting images: the Heron Tower, the Shard and Kings Place.
Many thanks to Londonist Flickr pool contributors for these images: including three from David Bank (his personal website here), richwat2011, tripowski, Brron, Kris Doubleyou, bobaliciouslondon and andrew off-road.