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|Greenford branch line|
The bay platform at Greenford station.
A Paddington train awaits departure.
|Operator(s)||Great Western Railway |
|Depot(s)||Old Oak Common TMD|
|Rolling stock||Class 165 "Turbo"|
|Track length||2 miles 40 chains (4.0 km)|
|Number of tracks||2|
|Track gauge||4 ft 8 1⁄2 in (1,435 mm) standard gauge|
The Greenford branch line is a 2 miles 40 chains (4.0 km) Network Rail suburban railway line in west London, England. It runs northerly from a triangular junction with the Great Western Main Line west of West Ealing to a central bay platform at Greenford station, where it has cross-platform interchanges to the London Underground's Central line. A triangular junction near Greenford connects to the Acton–Northolt line (formerly the New North Main Line). The line serves mainly the suburbs of Ealing and Greenford.
The opening of the line in 1903 coincided with the opening of a station at Park Royal on the Acton–Northolt line to serve the Royal Agricultural Show held in the grounds of part of the Twyford Abbey Estate. The Show ran from 15 June 1903 to 4 July 1903 during which period trains operated a circular service to and from Paddington via Park Royal and Ealing. Normal services started on 2 May 1904 and the links to Greenford station were put in on 1 October 1904.
The loop formed by the GWML, the branch and the ANL is sometimes used for turning trains for operational reasons such as balancing wheel wear. On weekends in 2008 during engineering works on the West Coast Main Line the line was used by Virgin Trains' Euston-Birmingham International "Blockade Buster" service which ran to Euston via Willesden, Acton Main Line, Ealing Broadway, Greenford, High Wycombe, Banbury and Coventry using pairs of 5-car Voyager sets. On two Sundays in February 2010, Chiltern and Wrexham & Shropshire trains were diverted to Paddington via the line while engineering work blocked the route to Marylebone.
Locally the service is called the 'Push-and-pull', a term which dates from the days of steam, when the engine could not change ends at Greenford and so the locomotive pulled the carriages one way and pushed them on the return run (see GWR Autocoach). In the 1950s the service frequently ran with two auto-trailers, one either side of the engine.
During the 1960s and '70s the service was normally operated by a Class 121 'Bubble Car' two-carriage diesel railcar, although this was later reduced to a single carriage.
In preparation for Crossrail, a new platform 5 has been constructed at West Ealing, and (as of January 2017) all services have been diverted to terminate there.
The passenger service is provided by Great Western Railway. Trains from the branch terminate at West Ealing, except for one service from Paddington at the start of the day, and to Paddington at the end of the day.
There is a parliamentary service operated by Chiltern Railways from 10 December 2018 that - during the weekday - starts from South Ruislip and non-stops through to West Ealing and returns to High Wycombe. 
All services are operated with two-car Class 165 Turbo diesel trains. There is no Sunday service.
These are statistics of passenger usage on the National Rail network along the Greenford branch line from the year beginning April 2002 to the year beginning April 2011.
|Greenford||No data||No data||No data||85,234||90,343||74,196||105,452||152,542||173,868||190,658||195,998||232,160||260,132||229,870|
|Castle Bar Park||40,678||13,522||19,893||97,363||100,705||92,768||84,868||124,492||124,364||144,182||158,806||180,504||188,120||151,942|
|The annual passenger usage is based on sales of tickets in stated financial years from Office of Rail Regulation statistics. The statistics are for passengers arriving and departing from each station and cover twelve month periods that start in April. Methodology may vary year on year. Barking and Blackhorse Road are affected by usage of the ticket gates for the underground and that Gospel Oak connects to the North London Line section of the London Overground and is similarly affected. Barking is further affected by the ticket gates used to access C2C services.|
- At Greenford: London Underground Central line,
- At West Ealing: GWR local services and TFL Rail to Heathrow Airport
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