These reports are a great read. This year you have to either pay (Amazon) for a hard copy or subscribe (for free) for a free download.
Leon is right. The report includes buildings in both pre-planning and planning. A significant number have received permission but there are still a lot of hoops to jump through before beginning construction, financing being a fairly major obstacle. Regardless, there will be a lot of tall buildings and the skyline of London will change.
Weirdly the West End is the one area that won’t change as there is a height restriction on new construction. Centrepoint is in itself an aberration. A lot of the new buildings are concentrated in East London particularly in Wood Wharf, Greenwich Peninsula and Stratford. Central development is focused around Kings Cross, Battersea/Nine Elms and Paddington.
By the way, if anyone wants to see a great 3D model of what London will look like with all this development check out the New London Model at the Building Centre by Tottenham Court Road.