Editing Metropolitan line (section)

=== Goods-only branches ===
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|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 Canal|Wendover Arm]] of the Grand Union Canal. The line was built during the First World War and closed in 1963.<ref name="Halton Railway MOD">{{cite web|title=Halton Railway|url=http://www.raf.mod.uk/rafhalton/aboutus/haltonrilway.cfm|website=[[RAF Halton]]|publisher=MOD|access-date=6 September 2015}}</ref> The trackbed is now a footpath.<ref name="The Wendover Arm: Linear and Circular Walks">{{cite book|title=The Wendover Arm: Linear and Circular Walks|publisher=Buckinghamshire County Council|location=Aylesbury|url=http://www.buckscc.gov.uk/media/952709/Wendover_Arm_Leaflet.pdf|access-date=6 September 2015}}</ref>

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|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.