Editing Metropolitan line (section)

=== A separate identity ===
[[File:Amersham.jpg|thumb|A stock at Amersham]]
Although the [[East London line]] had been an isolated shuttle since 1939,<ref name="Rose">{{cite book |last=Rose |first=Douglas |title=The London Underground: A Diagrammatic History |edition=8th |date=December 2007 |orig-year=1980 |publisher=Capital Transport |location=London |isbn=978-1-85414-315-0}}</ref> it was shown on London Underground maps as part of the Metropolitan line until 1968.<ref>{{cite web |title=London Underground map 1968 |url= http://www.clarksbury.com/cdl/maps/tube68.jpg |work=The London Tube map archive |access-date=21 November 2012}}</ref> In 1970, it was shown with a thin white line in the middle and labelled the "East London section".<ref>{{cite web |title=London Underground map 1970 |url= http://www.clarksbury.com/cdl/maps/tube70.jpg |work=The London Tube map archive |access-date=21 November 2012}}</ref> By the 1985 map, it had become the "East London Line", remaining the same colour as the Metropolitan line with a white line in the middle,<ref>{{cite web |title=London Underground map 1985 |url= http://www.clarksbury.com/cdl/maps/tube85.jpg |work=The London Tube map archive |access-date=21 November 2012}}</ref> changed to orange by the 1990 map.<ref name="T90" /> In 1990, the [[Hammersmith & City line]] became a separate line from Hammersmith to Whitechapel (Barking during the peak), the Metropolitan line being from Aldgate to Baker Street and northwards to Amersham with branches to Chesham, Uxbridge and Watford.<ref name="Rose" /><ref name="T90">{{cite web |title=London Underground map 1990 |url= http://www.clarksbury.com/cdl/maps/tube90.jpg |work=The London Tube map archive |access-date=21 November 2012}}</ref>

In 2003, the infrastructure was partly privatised in a [[public–private partnership]] managed by the [[Metronet (British infrastructure company)|Metronet]] consortium. Metronet entered [[Administration (law)|administration]] in 2007 and [[Transport for London]] took over responsibilities.<ref>{{cite web|url=http://www.tfl.gov.uk/assets/downloads/london-underground-ppp-performance-report-2009-2010.pdf |title=PPP Performance Report |date=2009–2010 |publisher=Transport for London |access-date=7 March 2012 |pages=7–8 |url-status=dead |archive-url=https://web.archive.org/web/20120426034334/http://www.tfl.gov.uk/assets/downloads/london-underground-ppp-performance-report-2009-2010.pdf |archive-date=26 April 2012 }}</ref>

On 12 December 2010, the service to Amersham was reduced from four trains per hour to two, and a direct service between Chesham and central London was introduced, replacing the 4-car Chesham to Chalfont & Latimer shuttle.<ref>{{Cite press release |url= http://www.tfl.gov.uk/static/corporate/media/newscentre/archive/17617.html |title=Chesham trains to run direct into central London |date=7 December 2010 |publisher= Transport for London |archive-url= https://web.archive.org/web/20120417091407/http://www.tfl.gov.uk/static/corporate/media/newscentre/archive/17617.html |archive-date=17 April 2012 |url-status=dead |access-date=21 March 2018}}</ref> The final passenger services operated by the A Stock ran on 26 September 2012,<ref>{{cite news |url= http://www.railwaystoday.com/2012/09/26/a-stock-the-end/ |title=A Stock last day on the Metropolitan Line |date=26 September 2012 |work=Railways Today |access-date=2 November 2012 |archive-url= https://web.archive.org/web/20160119095624/http://www.railwaystoday.com/2012/09/26/a-stock-the-end/ |archive-date=19 January 2016 |url-status=dead }}</ref> followed by a ticketed public [[railtour]] on 29 September.<ref>{{cite web |url= http://www.ltmuseum.co.uk/whats-on/events/vehicles-on-the-move |title= Last A stock rail tour |publisher= London Transport Museum |access-date= 27 September 2012 |archive-date= 1 October 2012 |archive-url= https://web.archive.org/web/20121001055823/http://www.ltmuseum.co.uk/whats-on/events/vehicles-on-the-move |url-status= dead }}</ref>