Editing London Underground (section)

===New trains for deep-level lines===
{{main|New Tube for London}}{{Update section|date=June 2024}}
In mid-2014, Transport for London issued a tender for up to 18 trains for the Jubilee line and up to 50 trains for the Northern line. These would be used to increase frequencies and cover the Battersea extension on the Northern line.<ref>{{Cite web|url=http://www.railtechnologymagazine.com/Rail-News/lu-begins-search-for-new-jubilee-and-northern-line-train-supplier|archive-url=https://web.archive.org/web/20200803140346/http://www.railtechnologymagazine.com/Rail-News/lu-begins-search-for-new-jubilee-and-northern-line-train-supplier|url-status=dead|archive-date=3 August 2020|title=LU begins search for new Jubilee and Northern line train supplier|website=www.railtechnologymagazine.com|access-date=5 October 2019}}</ref>

In early 2014, the Bakerloo, Central, Piccadilly and Waterloo & City line rolling-stock replacement project was renamed ''New Tube for London'' (NTfL) and moved from the feasibility stage to the design and specification stage. The study had shown that, with new generation trains and re-signalling:
* Piccadilly line capacity could be increased by 60% with 33 trains per hour (tph) at peak times by 2025.
* Central line capacity increased by 25% with 33 tph at peak times by 2030.
* Waterloo & City line capacity increased by 50% by 2032, after the track at Waterloo station is remodelled.
* Bakerloo line capacity could be increased by 25% with 27 tph at peak times by 2033.
The project is estimated to cost £16.42{{nbsp}}billion (£9.86{{nbsp}}billion at 2013 prices). A notice was published on 28 February 2014 in the [[Official Journal of the European Union]] asking for expressions of interest in building the trains.<ref name="tfl20140205part1item10">{{cite web |url=http://www.tfl.gov.uk/cdn/static/cms/documents/board-20140205-part-1-item10-new-tube-for-london.pdf |title=New Tube for London Programme |publisher=Transport for London |work=Board Minutes |date=5 February 2014 |access-date=3 April 2014 |archive-date=7 April 2014 |archive-url=https://web.archive.org/web/20140407072018/http://www.tfl.gov.uk/cdn/static/cms/documents/board-20140205-part-1-item10-new-tube-for-london.pdf |url-status=live }}</ref><ref name="rgazette20140228">{{cite news |url=http://www.railwaygazette.com/news/urban/single-view/view/london-underground-starts-new-tube-for-london-train-procurement.html |title=New Tube for London Programme |work=Railway Gazette |date=28 February 2014 |access-date=3 April 2014 |archive-date=10 March 2014 |archive-url=https://web.archive.org/web/20140310012844/http://www.railwaygazette.com/news/urban/single-view/view/london-underground-starts-new-tube-for-london-train-procurement.html |url-status=live }}</ref> On 9 October 2014, TFL published a shortlist of those ([[Alstom]], [[Siemens]], [[Hitachi]], [[Construcciones y Auxiliar de Ferrocarriles|CAF]] and [[Bombardier Transportation|Bombardier]]) who had expressed an interest in supplying 250 trains for between £1.0billion and £2.5billion, and on the same day opened an exhibition with a design by PriestmanGoode.<ref>{{cite press release |url=http://www.tfl.gov.uk/info-for/media/press-releases/2014/october/design-for-the-new-tube-for-london-revealed |title=Design for the 'New Tube for London' revealed |publisher=TfL |date=9 October 2014 |access-date=9 October 2014 |archive-date=15 May 2021 |archive-url=https://web.archive.org/web/20210515015540/https://tfl.gov.uk/info-for/media/press-releases/2014/october/design-for-the-new-tube-for-london-revealed |url-status=live }}</ref><ref name="bbc29520761">{{cite news |url=https://www.bbc.co.uk/news/uk-england-london-29520761 |title=New Tube for London Programme |work=BBC News |date=9 October 2014 |access-date=9 October 2014 |archive-date=20 June 2021 |archive-url=https://web.archive.org/web/20210620102851/https://www.bbc.co.uk/news/uk-england-london-29520761 |url-status=live }}</ref> The fully automated trains may be able to run without drivers,<ref name="Railnews">{{cite news |url=http://www.railnews.co.uk/news/2014/02/28-tfl-prepares-for-driverless-tube.html |title=TfL prepares for driverless tube |work=Railnews |date=28 February 2014 |access-date=3 April 2014 |archive-date=6 April 2014 |archive-url=https://web.archive.org/web/20140406181728/http://railnews.co.uk/news/2014/02/28-tfl-prepares-for-driverless-tube.html |url-status=live }}</ref> but the ASLEF and RMT trade unions that represent the drivers strongly oppose this, saying it would affect safety.<ref>{{cite news |url=https://www.bbc.co.uk/news/uk-england-london-26381175 |title=Driverless Tube trains: Unions vow 'war' over plan |work=BBC News |date=28 February 2014 |access-date=3 April 2014 |archive-date=30 April 2014 |archive-url=https://web.archive.org/web/20140430092816/http://www.bbc.co.uk/news/uk-england-london-26381175 |url-status=live }}</ref> The [[invitation to tender]] for the trains was issued in January 2016;<ref>{{cite news |title=New Tube for London invitations to tender issued |url=http://www.railwaygazette.com/news/single-view/view/new-tube-for-london-invitations-to-tender-issued.html |access-date=14 November 2016 |work=Railway Gazette |date=18 January 2016 |archive-date=4 July 2018 |archive-url=https://web.archive.org/web/20180704054555/http://www.railwaygazette.com/news/single-view/view/new-tube-for-london-invitations-to-tender-issued.html |url-status=live }}</ref> the specifications for the Piccadilly line infrastructure are expected in 2016,<ref name="tfl20140205part1item10" /><ref name="rgazette20140228" /> and the first train is due to run on the Piccadilly line in 2023.<ref>{{cite news|title=Khan: New Piccadilly rolling stock will be delivered by 2023|url=http://www.railtechnologymagazine.com/Rail-News/khan-new-piccadilly-rolling-stock-will-be-delivered-by-2023-|access-date=18 January 2018|work=Rail Technology Magazine|date=20 December 2016|archive-date=15 May 2021|archive-url=https://web.archive.org/web/20210515085329/https://www.railtechnologymagazine.com/Rail-News/khan-new-piccadilly-rolling-stock-will-be-delivered-by-2023-|url-status=live}}</ref> [[Siemens Mobility]]'s Inspiro design was selected in June 2018 in a £1.5billion contract.<ref>{{cite news |title=East Yorkshire factory wins £1.5bn Tube train deal |url=https://www.bbc.co.uk/news/uk-england-humber-44496526 |access-date=15 June 2018 |work=BBC News |date=15 June 2018 |archive-date=10 May 2021 |archive-url=https://web.archive.org/web/20210510124359/https://www.bbc.co.uk/news/uk-england-humber-44496526 |url-status=live }}</ref>