London had previously announced that the Tube would offer 24-hour weekend trains on the Piccadilly, Victoria, Central, Jubilee and Northern lines starting on September 12. This past Friday, London Mayor Boris Johnson and Chancellor George Osborne said that night trains would be expanded to include Metropolitan, Circle, District and Hammersmith & City lines too. They also announced this 24 hour service will be expanded to the London Overground in 2017 and the Docklands Light Railway by 2021.
http://www.euronews.com/travel…uch-of-rail-network/