Crossrail's largest above-ground plans have been given the go-ahead by Westminster City Council.
The "once-in-a-generation opportunity" to develop London's West End is just part of a huge scheme of work covered by the Crossrail development, which involves a series of brand new rail links being created under the capital.
In this case, Crossrail is creating two developments located over each ticket hall of Tottenham Court Road station, totalling 500,000 sq ft of retail, office and residential accommodation, as well as a new theatre to replace the former Astoria.
Commenting on the project, Ian Lindsay, Crossrail's land and property director, said: "The £1 billion redevelopment … provides a once-in-a-generation opportunity to revitalise the eastern end of Oxford Street.
"The plans including high-quality offices and shops will enhance the Oxford Street and Charing Cross Road area as a thriving cultural and retail destination."
Four pairs of tunnel-boring machines weighing around 1,000 tonnes each are currently working non-stop up to 40m under the streets of London to deliver the shafts for the Crossrail lines.