The Metropolitan line, colloquially known as the Met, is a London Underground line between Aldgate in the City of London and Amersham and Chesham in Buckinghamshire, with branches to Watford in Hertfordshire and Uxbridge in Hillingdon. Printed in magenta on the tube map, the line is 41.4 miles (66.7km) in length and serves 34 stations (13 of which are step free to platform). Between Aldgate and Finchley Road, the track is mostly in shallow "cut and cover" tunnels, apart from short sections at Barbican and Farringdon stations. The rest of the line is above ground, with a loading gauge of a similar size to those on main lines. Just under 94 million passenger journeys were made on the line in 2019.
The line is one of just two Underground lines to cross the Greater London boundary (the other being the Central line). It is the only Underground line with an express service at peak times; the resulting longer distance between stations means trains can achieve the system's highest speeds of over 60 miles per hour (100km/h) on some sections.
In 1863, the Metropolitan Railway began the world's first underground railway between Paddington and Farringdon with wooden carriages and steam locomotives, but its most important route became the line north-west into the Middlesex countryside, where it stimulated the development of new suburbs. Harrow was reached in 1880, and ultimately the line continued as far as Verney Junction in Buckinghamshire, more than 50 miles (80km) from Baker Street. From the end of the 19th century, the railway shared tracks with the Great Central Railway out of Marylebone. The central London lines were electrified by 1907 but electric locomotives were exchanged for steam locomotives on trains heading north of Harrow. After the railway was absorbed by the London Passenger Transport Board in 1933, the line was cut back to Aylesbury. Steam trains ran until 1961, when the line was electrified to and services were curtailed at Amersham. The Hammersmith & City line was shown on the tube map as a part of the Metropolitan line until 1990, when it appeared as a separate line. The current S8 Stock trains entered service between 2010 and 2012, replacing the A Stock trains, that served the line since 1961.
The section between Aldgate and Baker Street is shared with the Circle line; between Liverpool Street and Baker Street with the Hammersmith & City line; between Rayners Lane and Uxbridge with the Piccadilly line; and between Harrow-on-the-Hill and Amersham with the London–Aylesbury line operated by Chiltern Railways. Baker Street is the southbound terminus for some trains not continuing to Aldgate. Most of the route has two tracks, except for the single-track Chesham branch and a four-track section between Wembley Park and Moor Park that allows fast and semi-fast services to overtake "all stations" trains. There are four tracks between Wembley Park and Finchley Road, but only the outer ones are used by the Metropolitan line's non-stop trains: the inner pair was transferred to the Bakerloo line in 1939 (becoming the Jubilee line in 1979) with services calling at all stations.
Construction of the Metropolitan line near King's Cross station (1861)
The Metropolitan Railway, also known as the Met, was a passenger and goods railway that served London from 1863 to 1933, its main line heading north-west from the City to what were to become the Middlesex suburbs. Its first line connected the mainline railway termini at Paddington, Euston and King's Cross to the City, built beneath the New Road using the cut-and-cover method between Paddington and King's Cross, and in tunnel and cuttings beside Farringdon Road from King's Cross to near Smithfield. The world's first underground railway, it opened on 10 January 1863 with gas-lit wooden carriages hauled by steam locomotives. The line operated at a frequency of three trains per hour, rising to four trains per hour during the peak periods.[4][5][6] In the 1871 plans for an underground railway in Paris, it was called the Métropolitain.[7]
The railway was soon extended from both ends and northwards via a branch from Baker Street. It reached Hammersmith in 1864 and Richmond in 1877; it completed the Inner Circle in 1884,[8] but the most important route became the line west and north-west into the Middlesex countryside, where it stimulated the development of new suburbs. Harrow was reached in 1880, and ultimately, as far as Verney Junction in Buckinghamshire, more than 50 miles (80 kilometres) from Baker Street. From the end of the 19th century, the railway shared tracks with the Great Central Railway route out of Marylebone.[9]
12 Sarah Siddons with vintage train at Hammersmith
Electric traction was introduced in 1905 with electric multiple units operating between Uxbridge, Harrow-on-the-Hill and Baker Street. To remove steam and smoke from the tunnels in central London, the railway purchased electric locomotives, exchanged for steam locomotives at Harrow from 1908.[10] In 1910, a seventeen-minute silent film was made showing large portions of the journey from Baker Street to Aylesbury and Uxbridge, seen from the cab of a train.[11]
To improve services, more powerful electric and steam locomotives were purchased in the 1920s. A short branch opened from Rickmansworth to Watford in 1925. After World War I, the 4-mile (6.4km) Stanmore branch was built from Wembley Park.[12]
On 1 July 1933, the Metropolitan was amalgamated with other Underground railways, tramway companies and bus operators to form the London Passenger Transport Board, and a period of rationalisation followed.
While the Metropolitan was run as an outer suburban route with steam-hauled trains and goods services, the LPTB wished to focus on electrified trains and suburban traffic. Goods services were passed to the London and North Eastern Railway, which also took over the role of providing steam locomotives for trains beyond the end of electrification at Rickmansworth. All services north-west of Aylesbury were withdrawn by 1936[13] though services returned to Quainton Road between 1943 and 1948.[14]
The 1930s was a period of rapid growth for the north-western suburbs of London, and LPTB developed ambitious plans to simplify the Metropolitan line and expand capacity. Several stations on the Uxbridge branch were rebuilt, replacing temporary wooden buildings with modernist designs and giving Uxbridge station a new site in the town centre. A major bottleneck in the line, the double-track tunnel from Baker Street to Finchley Road, was bypassed by boring two tube tunnels underneath the Metropolitan tunnels, transferring slow services and the Stanmore branch to the Bakerloo line.[15] (This route was transferred to the Jubilee line in 1979.)[16] In 1936, the line was extended east from Whitechapel to Barking along the tracks of the District line.[17] London Transport inherited incompatible electric multiple units from the railway, including the 1927–33 multiple-unit compartment stock used on routes to Watford and Rickmansworth, and these were refurbished to form a uniform fleet and designated London Underground T Stock.[18] In the 1950s, F Stock trains, with sliding doors under the control of the guard, were transferred from the District line; these mainly worked the semi-fast Harrow and Uxbridge services.[19]
A Stock vehicles at Rayners Lane in their original unpainted livery
A major rebuilding of the main line from Wembley Park to Amersham was planned in the 1930s but delayed by the war. The line from Wembley to Harrow was rebuilt immediately after the war and the project was completed from 1956 to 1962, on a more modest scale than originally planned. Until 1961, passenger trains continued to be attached to a steam locomotive at Rickmansworth to run to Aylesbury. The rebuilding electrified the line from Rickmansworth to Amersham, transferring all Aylesbury services to British Railways. A pair of fast lines was added from Harrow to north of Moor Park by 1962, allowing outer-suburban trains to run fast to Moor Park.[20][failed verification] Aluminium A stock, originally unpainted, replaced the T stock and locomotive-hauled trains. More A Stock trains were built in 1962–63 to replace the trains on the Uxbridge service, giving the main line a single train type for all services. A Stock was four-car units that could operate as four- or eight-car trains;[21] normally operated as eight cars, a four-car unit operated the Chesham shuttle.[22]One person operation of the trains was proposed in 1972, but due to conflict with the trade unions was not introduced on the line until 1986.[23]
A separate identity
A stock at Amersham
Although the East London line had been an isolated shuttle since 1939,[17] it was shown on London Underground maps as part of the Metropolitan line until 1968.[24] In 1970, it was shown with a thin white line in the middle and labelled the "East London section".[25] 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,[26] changed to orange by the 1990 map.[27] 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.[17][27]
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.[29] The final passenger services operated by the A Stock ran on 26 September 2012,[30] followed by a ticketed public railtour on 29 September.[31]
The Metropolitan line is 42 miles (67km) long and serves 34 stations.[32] It is electrified with a four-rail DC system: a central conductor rail is energised at –250V and a rail outside the running rail at +500V, giving a potential difference of 750V, except for the section from Uxbridge to Finchley Road (via Harrow-on-the-Hill) which is energised at–210V and +420V respectively (630V potential difference) to maintain compatibility with 1973 Stock and 1996 Stock that runs in those areas.[33][34] The first 6 miles (9.7km) from Aldgate are below ground,[35] shared with the Circle and Hammersmith & City lines to Baker Street, where the line diverges, remaining in tunnel until Finchley Road.[36] Metropolitan line trains essentially skip two stops between Baker Street and Finchley Road, with the Jubilee line serving the intermediate stations on an adjacent parallel line. The Jubilee line then joins the Metropolitan line in the same right-of-way at Finchley Road. Metropolitan line trains then run express from Finchley Road to Wembley Park, with the Jubilee line serving the intermediate stations. Metropolitan line platforms at Willesden Green and Neasden remain for emergency use.[37] At Wembley Park the Jubilee line diverges to the Stanmore branch at a grade-separated junction. From just after Finchley Road, these four tracks run parallel with the Network RailChiltern Main Line from Marylebone.[36]
Between Wembley Park and Harrow-on-the-Hill, the Metropolitan is four-track, with fast and slow lines paired by direction, paralleling the two-track un-electrified London–Aylesbury line. The slow lines are between the fast lines, and the two intermediate stations have island platforms.[36] Harrow-on-the-Hill has platforms on all six lines.[36] The central slow lines diverge here at a grade-separated junction to become the 7.5 miles (12.1km) Uxbridge branch. After West Harrow, at Rayners Lane the line is joined by the Piccadilly line, which shares the tracks to Uxbridge; a turnback siding allows some Piccadilly line services to terminate at Rayners Lane.[36][38]
On the main line between Harrow-on-the-Hill and Moor Park, the line is four-track, paired by use. The western fast tracks are shared with Aylesbury line services from Marylebone; the eastern slow tracks have platforms at the intermediate stations.
North of Moor Park, the Watford branch diverges from the slow lines.[36] This double-track branch has stations at Croxley and Watford.[36][39] The Watford branch has a triangle junction with the main line, with a north-facing curve between Croxley and Rickmansworth. This route, Watford North Curve, is used daily for a few services and empty stock movements.[40]
From the Watford triangle to Amersham, the line has two tracks. At Chalfont & Latimer, the 3.89 miles (6.26km)single-trackChesham branch diverges, running parallel to the main line for a distance.[32][36] The Metropolitan line ends at Amersham, where there are turnback sidings just beyond the platforms. The route continues to Aylesbury with Chiltern Railways trains only.[41]
The fast (non-stopping) lines between Wembley Park and Harrow on the Hill are signalled with LUL signalling, but using four-aspect Network Rail signal heads.[42] The upper two lights are a two-aspect stop signal displaying either a green or red aspect, the lower two lights a repeater signal for the next stop signal ahead showing a green or yellow aspect, or no aspect when the stop signal shows a red aspect. Thus they are effectively four-light three-aspect signals with green/red/green/yellow lights from the top, danger being a single red light, caution the top green light over a yellow light, and clear two green lights.[42]
The Metropolitan line's suburban rail character opposed to other London Underground lines is also shown by the long distances between stops. Eight of the top 10 furthest apart stations on the Underground are on the Metropolitan line. The section between Chalfont & Latimer and Chesham is the longest at 3.9 miles (6.3km),[43] whilst the Finchley Road to Wembley Park section is the second longest, and Rickmansworth to Chorleywood the fourth longest overall.
Services
The Metropolitan line is the only London Underground line to operate non-stop services through some of its stations, although since 11 December 2011 these only run on weekdays during peak times (southbound in the morning peak, northbound in the evening peak).[44] Depending on the stopping pattern, services are advertised as either all-stations, semi-fast or fast on platform information boards and on-train announcements. The stopping pattern of each type of service is as follows:
All-stations services call at all stations en route[44]
Fast services run non-stop between Wembley Park and Harrow-on-the-Hill and between Harrow-on-the-Hill and Moor Park[44]
In the southbound direction, fast and semi-fast trains do not usually call at Wembley Park, and instead run non-stop from Harrow-on-the-Hill to Finchley Road[44]
Owing to the track layout, fast services can only run to/from Amersham or Chesham. The Uxbridge branch diverges from the rest of the line before the "fast" section, while the Watford branch is not directly connected with the fast line at Moor Park.[45]
No Metropolitan line trains call at any intermediate stations between Finchley Road and Wembley Park. These stations are served by the Jubilee line which runs parallel to the Metropolitan line along this section.[44]
Frequency
During the off-peak the service pattern on the line, in trains per hour (tph), is as follows:[44]
These services combine to give a total frequency of 16tph between Baker Street and Harrow-on-the-Hill. Of these, 12tph run between Aldgate and Baker Street which, together with the 6tph frequencies on both the Circle and Hammersmith & City lines,[46] gives a total of 24 trains every hour on the central-London section between Liverpool Street and Baker Street.
In the morning peak, the southbound service pattern is strengthened to the following:[44]
S8 Stock trains featuring partial transverse seating, reminiscent of the older A Stock trains
Since 20 September 2012, all services have been provided by eight-car S Stock trains[47] introduced in July 2010 to replace the 1960s A Stock.[48] Part of Bombardier's Movia family, they have air-conditioning, feasible because the sub-surface tunnels, unlike tube tunnels, are able to disperse the exhausted hot air.[49][50] They have regenerative brakes, returning around 20% of their energy to the network and thus reducing energy consumption.[51] With fewer seats than the older A Stock– 306 compared with 448 – they can accommodate 697 standing passengers, compared with 597 in A Stock,[note 1] and have dedicated space for wheelchairs.[52] They have a top speed of 62 miles per hour (100km/h),[49] being the only London Underground stock to travel at that speed, doing so on the long-distance sections north of Finchley Road.
There are 58 S8 Stock trains in operation, as well as one eight-car S7 Stock also called 'S7+1' – which retains the all-longitudinal seating of the normal seven-car S7 Stock that is operated on London Underground's other sub-surface lines.
The line is served by a depot at Neasden.[note 2] The Metropolitan Railway opened a carriage works at Neasden in 1882 and the following year the locomotive works were moved from Edgware Road.[53] In 1904–05, the depot was refitted to take the new electric multiple units[54] and accommodation enlarged in 1932–3.[55] After the amalgamation into the LTPB, the depot was rebuilt from 1936 to 1939. The depot was upgraded in 2010–11 to enable it to maintain S Stock trains.[56] Trains are also stored overnight at Uxbridge, Watford, Rickmansworth and Wembley Park.[57]
In 1989, to celebrate the 100th anniversary of the opening of the Metropolitan to Chesham, the first Steam on the Met event took place with London Underground running two weekends of steam specials between Chesham and Watford.[58] The event was a success and so in 1990 London Underground ran steam between Harrow and Amersham. In 1992, to celebrate 100years of the Met at Amersham, the event was extended to five days at the end of May. From 1994, diesel locomotive 20227, owned by the Class 20 Locomotive Society, and electric locomotive Sarah Siddons provided air braking for the coaches.[citation needed] In 1995, trains ran between Amersham and Watford.[59]
To celebrate the 150th anniversary of the opening of the Metropolitan, special services ran in January 2013 using a restored 1892 "Jubilee" carriage, 1898–1900 Ashbury and Cravens bogie carriages, Metropolitan Railway milk van No.3, Metropolitan Railway E Class steam locomotive No. 1 and electric locomotive Sarah Siddons.[61] Further events were planned for 2013 involving Locomotive No. 1, Sarah Siddons and the Jubilee carriage, including a Steam back on the Met scheduled for May.[62]
It was planned that a new signalling system would be used first on the line north of Baker Street from the end of 2016,[63] but signalling contractor Bombardier was released from its contract by agreement in December 2013 amid heavy criticism of the procurement process[64] and London Underground subsequently awarded the contract for the project to Thales in August 2015.[65]
With the introduction of S8 Stock, the track, electrical supply, and signalling systems are being upgraded in a programme planned to increase peak-hour capacity on the line by 27 per cent by the end of 2023.[63][66][67] A single control room for the sub-surface railway opened at Hammersmith on 6 May 2018, and communications-based train control (CBTC) provided by Thales will progressively replace 'fixed block' signalling equipment dating back the 1940s.[63][68] Trackside signals with automatic train protection (ATP) will remain on the line north of Harrow-on-the-Hill, shared with Chiltern Railways DMUs.[63]
The rollout of CBTC has been split into sections, each known as a signal migration area (SMA), and are located on the line as follows:[69].
↑ SMAs 0.5, 1, 4–7 and 10–12 concern parts of the District, Circle, and Hammersmith & City lines.
Work on the SMAs north of Finchley Road were delayed in November 2023 because of the complexity of Neasden Depot (shared with the Jubilee Line) and challenges relating to the inter-operability with Chiltern Railways which shares tracks with the Metropolitan line in this area.[70]
Originally Moorgate Street, renamed 24 October 1924. Connects with Northern line and National Rail services from the main line Northern City Line. The Elizabeth line is interchangeable via the Northern Line platforms from Liverpool Street Station due to the long platforms.
Resited 22 December 1865. Interchangeable with National Rail and Elizabeth line services. Originally Farringdon Street, renamed Farringdon & High Holborn 1922, Farringdon 1936
Station resited 1941. Originally King's Cross, renamed King's Cross & St Pancras 1925, King's Cross St Pancras 1933. Connects with Northern, Piccadilly and Victoria lines, National Rail services and Eurostar
Between Moor Park and Croxley, a short branch ran south-east off the Watford branch, near its junction with the main line, to Croxley Tip, a rubbish dump beside the Grand Union Canal. This site began as a gravel loading point before becoming used by the railway to dump waste such as old ballast and waste from Neasden power station. This route, never used for passenger traffic, continued to be used by London Transport's small fleet of steam engines until 1971, when diesels replaced them. The branch closed some time after this, although a section of the spur line remained visible from a passing train.
A second short branch line, known as the Halton Railway, served RAF Halton near Wendover, across the Wendover Arm of the Grand Union Canal. The line was built during the First World War and closed in 1963.[71] The trackbed is now a footpath.[72]
Although not operated by Metropolitan passenger services, the line from South Harrow to Rayners Lane was built by the Metropolitan railway as the District Railway was in financial difficulties at the time. This included a short branch, part of which is still visible, on a viaduct to a gas works. Other minor freight connections along the line once included connections to the Midland main line at Finchley Road.
A single-track spur from a small yard between Ickenham and Ruislip stations connects to Ruislip Depot of the Central line. This line is used for engineering and empty stock transfers, although occasional plans suggest extending the Central line into Uxbridge by upgrading the connection. It was built in 1973.
Also known as the Croxley Rail Link, an extension to the Metropolitan line was to reroute the Watford branch from the current terminus using the disused Croxley Green branch line to Watford Junction. Funding was agreed in December 2011[73] and the necessary permission was granted by the UK Government in July 2013.[74][39][75] Due to a funding shortfall, the project was cancelled in 2016.[75]
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The Metropolitan Railway was a passenger and goods railway that served London from 1863 to 1933, its main line heading north-west from the capital's financial heart in the City to what were to become the Middlesex suburbs. Its first line connected the main-line railway termini at Paddington, Euston, and King's Cross to the City. The first section was built beneath the New Road using cut-and-cover between Paddington and King's Cross and in tunnel and cuttings beside Farringdon Road from King's Cross to near Smithfield, near the City. It opened to the public on 10 January 1863 with gas-lit wooden carriages hauled by steam locomotives, the world's first passenger-carrying designated underground railway.
Chesham tube station is a London Underground station in Chesham, Buckinghamshire, United Kingdom. It was opened on 8 July 1889 by the Metropolitan Railway (MR). It is the terminus station of the Chesham branch of the Metropolitan line, which runs from Chalfont & Latimer. The station, a Grade II listed building, is in London fare Zone 9.
Chorleywood is a London Underground and National Rail station in Travelcard Zone 7 on the Metropolitan line. The village of Chorleywood is in the Three Rivers district of Hertfordshire about 20 miles (32 km) from London. Chorleywood station is also served by Chiltern Railways, which runs trains from London Marylebone station through to Aylesbury.
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The Chesham branch is a single-track railway branch line in Buckinghamshire, England, owned and operated by the London Underground. It runs from a junction at Chalfont & Latimer station on the Metropolitan line for 3.89 miles (6.26 km) northwest to Chesham. The line was built as part of Edward Watkin's scheme to turn his Metropolitan Railway (MR) into a direct rail route between London and Manchester, and it was envisaged initially that a station outside Chesham would be an intermediate stop on a through route running north to connect with the London and North Western Railway (LNWR). Deteriorating relations between the MR and LNWR led to the MR instead expanding to the northwest via Aylesbury, and the scheme to connect with the LNWR was abandoned. By this time much of the land needed for the section of line as far as Chesham had been bought. As Chesham was at the time the only significant town near the MR's new route, it was decided to build the route only as far as Chesham, and to complete the connection with the LNWR at a future date if it proved desirable. Local residents were unhappy at the proposed station site outside Chesham, and a public subscription raised the necessary additional funds to extend the railway into the centre of the town. The Chesham branch opened in 1889.
London's Metropolitan Railway (MR) amalgamated with other underground railways, tramway companies and bus operators on 1 July 1933, to form the London Passenger Transport Board (LPTB); the MR became the Board's Metropolitan line.
↑ Baracaia, Alexa (22 August 2006). "Seven Wonders of London". London Evening Standard. p.21 – via newspapers.com.
↑ TfL Corporate Design (January 2009). "3: Underground line colours". Line diagram standard(PDF) (3ed.). Transport for London. Archived from the original(PDF) on 4 January 2022. Metropolitan line - Pantone 235, C:5 M:100 K:40
↑ Edwards, Dennis; Pigram, Ron (1988). The Golden Years of the Metropolitan Railway and the Metro-land Dream. Bloomsbury. p.32. ISBN1-870630-11-4.
↑ Pipe, Victoria; Marshall, Geoff (2018). The Railway Adventures: Places, Trains, People and Stations. Tewkesbury: September Publishing. p.82. ISBN9781910463871.
1 2 3 4 5 6 7 Rose, Douglas (December 2007) [1980]. The London Underground: A Diagrammatic History (8thed.). London: Capital Transport. ISBN978-1-85414-315-0.
↑ Croome, Desmond F.; Jackson, Alan Arthur (1993). Rails Through the Clay: A History of London's Tube Railways. Capital Transport. p.468. ISBN978-1-85414-151-4.
↑ "Commissioner's Report"(PDF). Board Meeting Documents. Transport for London. 20 September 2012. paragraph 3.2. Archived(PDF) from the original on 26 August 2020. Retrieved 27 September 2012.
↑ Waboso, David (December 2010). "Transforming the tube". Modern Railways. London. pp.42–45.
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