Editing London Underground (section)

===Lifts and escalators===
{{see also|London Underground infrastructure#Lifts and escalators|label 1=London Underground infrastructure: Lifts and escalators|Accessibility of transport in London}}
[[File:Canary Wharf tube station night 2.jpg|thumb|left|Escalators at Canary Wharf station]]
Originally access to the deep-tube platforms was by a lift.{{sfnp|Croome|Jackson|1993|pp=26, 35, 39, 87–89}} Each lift was staffed, and at some quiet stations in the 1920s the ticket office was moved into the lift, or it was arranged that the lift could be controlled from the ticket office.{{sfnp|Croome|Jackson|1993|p=540}} The first escalator on the London Underground was installed in 1911 between the District and Piccadilly platforms at Earl's Court and from the following year new deep-level stations were provided with escalators instead of lifts.{{sfnp|Croome|Jackson|1993|pp=114, 542}} The escalators had a diagonal shunt at the top landing.{{sfnp|Croome|Jackson|1993|pp=114, 542}}{{sfnp|Day|Reed|2010|p=59}} In 1921 a recorded voice instructed passengers to stand on the right and signs followed in the Second World War.{{sfnp|Croome|Jackson|1993|pp=154, 546}} Travellers were asked to stand on the right so that anyone wishing to overtake them would have a clear passage on the left side of the escalator.<ref>{{Cite news |url=http://entertainment.timesonline.co.uk/tol/arts_and_entertainment/film/london_film_festival/article6883065.ece |title=Mystery over Tube escalator etiquette cleared up by restored film |last=Malvern |first=Jack |date=21 October 2009 |work=The Times |location=London |access-date=9 December 2009 |archive-date=15 June 2011 |archive-url=https://web.archive.org/web/20110615070709/http://entertainment.timesonline.co.uk/tol/arts_and_entertainment/film/london_film_festival/article6883065.ece |url-status=dead }}{{Subscription required}}</ref> The first 'comb' type escalator was installed in 1924 at [[Clapham Common tube station|Clapham Common]].{{sfnp|Croome|Jackson|1993|pp=114, 542}} In the 1920s and 1930s many lifts were replaced by escalators.{{sfnp|Day|Reed|2010|p=93}} After the fatal 1987 [[King's Cross fire]], all wooden escalators were replaced with metal ones and the mechanisms are regularly degreased to lower the potential for fires.<ref>{{cite web |url=https://www.pbs.org/wgbh/nova/escape/pioneers.html |title=Pioneers of Survival: Fire |publisher=PBS |access-date=4 September 2017 |archive-date=9 June 2021 |archive-url=https://web.archive.org/web/20210609050812/https://www.pbs.org/wgbh/nova/escape/pioneers.html |url-status=live }}</ref> The only wooden escalator not to be replaced was at [[Greenford station]], which remained until March 2014 when TfL replaced it with the first [[Incline elevator|incline lift]] on the UK transport network in October 2015.<ref>{{cite web |url=https://tfl.gov.uk/info-for/media/press-releases/2015/october/uk-first-as-incline-lift-opens-at-greenford-tube-station |archive-url=https://web.archive.org/web/20160629225202/https://tfl.gov.uk/info-for/media/press-releases/2015/october/uk-first-as-incline-lift-opens-at-greenford-tube-station |url-status=dead |archive-date=29 June 2016 |title=Incline lift at Greenford Tube station is UK first |publisher=Transport for London |date=20 October 2015 |access-date=21 October 2015 }}</ref>

There are 426 escalators on the London Underground system and the longest, at {{convert|60|m}}, is at [[Angel tube station|Angel]]. The shortest, at Stratford, gives a vertical rise of {{convert|4.1|m}}. There are 184 lifts,<ref>{{Cite web |url=https://tfl.gov.uk/corporate/about-tfl/what-we-do/london-underground/facts-and-figures |title=Facts & figures |website=[[Transport for London]] |access-date=20 November 2017 |archive-date=17 February 2017 |archive-url=https://web.archive.org/web/20170217173345/https://tfl.gov.uk/corporate/about-tfl/what-we-do/london-underground/facts-and-figures |url-status=live }}</ref> and numbers have increased in recent years because of investment in making tube stations accessible. Over 28 stations will have lifts installed over the next 10 years, bringing the total of step-free stations to over 100.<ref name="Matters">{{Cite web |title=Improvements and Projects – Step-free access |url=https://tfl.gov.uk/travel-information/improvements-and-projects/step-free-access?intcmp=1954 |access-date=19 November 2017 |publisher=Transport for London |archive-date=10 May 2021 |archive-url=https://web.archive.org/web/20210510075408/https://tfl.gov.uk/travel-information/improvements-and-projects/step-free-access?intcmp=1954 |url-status=live }}</ref> Lift and escalators are abundant with advertising posters which can be used for artistic purposes due to the nature of their layout.<ref>{{Cite web |date=31 December 2022 |title=London Underground Advertising {{!}} All Products & Formats |url= https://tubeadverts.co.uk/formats/ |access-date=8 January 2023}}</ref>
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