Nine Elms tube station

Nine Elms is a London Underground station under construction in Nine Elms, London, as part of the Northern line extension to Battersea. The station is due to open in Autumn 2021. When open, it will serve the rapidly growing area, New Covent Garden Market and the Embassy of the United States.
It is close to the site of the former Nine Elms railway station, once the terminus of the London and South Western Railway.
Services.
The future station, which will be in Zone 1, will be served by the Northern line as part of the two-station extension from Kennington. The extension runs on to the redevelopment of Battersea Power Station.
Design.
The station will be designed and built by Ferrovial Agroman Laing O’Rourke, with over-station development by Assael Architecture. Art on the Underground has commissioned the artist Samara Scott to install a permanent artwork in the station's ticket hall: coloured liquid "spillages" containing objects and materials collected from the local area will be embedded into sections of the concrete panels of the ticket hall's walls.
Space around the station.
The future over-station development will provide over 400 new homes (with 40 percent being affordable), office space, retail and a new public square serving the station. This will allow Transport for London to recoup some of the costs of building the station, as well as providing long-term revenue for TfL.
Construction.
The station was given the final approval by the Secretary of State for Transport in November 2014, and construction began in 2015. 
The station is being built using the cut-and-cover station box method, ensuring easy access during construction, as well as allowing future construction of a mixed-use development on top of the station. 
The station was projected to open along with the rest of the extension in 2020, but in December 2018 the Mayor of London, Sadiq Khan, announced that the project's opening would be delayed for a year.
By June 2019, major tunnelling and track works had been completed, with an engineering train running on the extension for the first time. By February 2020, construction of the station was nearly complete, with platforms, escalators and the London Underground roundel installed on the station.