Three landmark projects that have become reality are the Heron Tower, Cheesegrater and Walkie Talkie.

BBC: London's future skyline in doubt

Though English Heritage's London advisory group supported Heron Tower, the organisation's main committee remains staunchly opposed to it.

ECONOMIST: London's skyline: Shame about the view | The

Chances are, though, that Heron Tower will get the thumbs-up.

ECONOMIST: London's skyline: Shame about the view | The