London Underground’s Northern Line extension to open on September 20

6 Sep 2021 by Mark Caswell
Northern Line extension (image from

Transport for London (TfL) has confirmed that the extension to London Underground’s Northern Line will open later this month.

Work started on the 3km extension back in November 2015, and the first passenger trains will run on the line on Monday September 20.

There will be two step-free, zone 1 stations at Nine Elms and Battersea Power Station, with an initial peak service of six trains per hour and an off-peak service of five trains per hour.

This will increase to 12 and ten trains per hour respectively by mid-2022. The timing of the first train serving Nine Elms and Battersea Power Station on Monday September 20 will be announced “in due course”.

The extension will connect to the Northern Line at Kennington, where the line splits northbound into the Charing Cross and Bank branches.

Northern Line extension (image from

Alongside the Northern Line extension, work is also nearing completion on a wider scheme to add new pavements, seating and signage, tree planting and increased cycle parking in the area.

A Victorian railway arch in Nine Elms, known as Arch 42, is also being opened up “to create a vital new walking route between Nine Elms station, Nine Elms Lane and the River Thames”.

And a permanent artwork installation by London-based Brazilian artist Alexandre da Cunha will be unveiled at the station at Battersea Power Station ahead of the line’s opening.

Entitled ‘Sunset, Sunrise, Sunset‘, the artwork will feature a rotating billboard, creating two friezes of colour which face each other along the length of the ticket hall.

Commenting on the news Sadiq Khan, Mayor of London, said:

“After an incredible effort from the huge number of people who worked on this project, it’s fantastic that we are now on the final countdown to the Northern Line Extension opening later this month.

“The two new stations at Nine Elms and Battersea Power Station are the first new stations on the Northern line for 80 years. They will hugely improve connectivity between these two areas and the rest of London, and play a major part in the capital’s recovery from the pandemic by supporting thousands of new jobs, homes and businesses.”

The opening of the Northern Line extension will be welcome news for TfL, which has faced criticism for the lengthy delays to Crossrail and the Elizabeth Line. The latest opening date for the project is the first half of 2022.

Crossrail delayed until 2022

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