Drawn up by Popularchitecture, in collaboration with Fluid Engineers and Pha Consul M&E specialists, the giant skyscraper would be three times larger than anything ever built in the capital and would create 12 new 'villages' in the sky.
At the centre of the structure would be a 'vast internal void' lit by circular openings every 20 storeys. Each of these 'holes' would be used as either public squares or for specialist activities such as ice skating, botanic gardens or swimming pools.
Practice founder Tom Teatum admits the scheme's scale is verging on 'almost unbelievable proportions' but insists there are developers who are interested, 'in particular because of minimal land value in relation to accommodation'.
He said: 'Occupying a scale far beyond anything that currently exists in London, the tower would allow the city's population to expand without significant impact to the architectural fabric on the ground.'
The practice also envisages the possibility that a whole series of the towers could be built.