The London overground and the Docklands Light Railway are going to run 24 hours a day at weekends, it was announced on Friday, ensuring drunk residents of the capital are able to get home in the early hours of the morning without resorting to a night bus.
Overground trains will begin running all night from 2017, while the DLR will become a 24-hour service from 2021. This will be followed soon afterwards by all-night services on the Circle, District, Hammersmith & City, and Metropolitan lines.
The pledge was unveiled by chancellor George Osborne and London mayor Boris Johnson as part of the Conservatives' pre-election economic plan for London.
It has already been confirmed that parts of the Northern, Victoria, Piccadilly, Jubilee, and Central lines will see 24-hour services from 18 September, meaning Londoners will be able to catch a tube every 15 minutes throughout Friday and Saturday nights on these routes from the autumn.
In addition to its existing routes, the London overground is set to take over a number of railway routes running from Liverpool Street through east London in the coming months, meaning areas such as Stoke Newington could soon enjoy a 24-hour railway link to central London.
Osborne also confirmed plans to extend Wi-Fi coverage to all areas of the London underground by 2020.
Labour assembly member Tom Copley welcomed the news but warned that there was a risk of assaults on staff increasing as a result of 24-hour services. He also suggested that Johnson is mainly focusing on his likely return to parliament for the safe Conservative seat of Uxbridge and South Ruislip.
This is a very welcome announcement," Copley said, "but with the general election only a couple of months away and no real detail about this project, Londoners will rightly question the mayor's ability to deliver, given he is increasingly checked out of City Hall."
Jim Waterson is a politics editor for BuzzFeed News and is based in London.
Contact Jim Waterson at email@example.com.
Got a confidential tip? Submit it here.