The Staines & West Drayton Railway (S&WDR) is a former railway on the western edge of London, England. It was about 5+1⁄2 miles (9 km) long and ran roughly north–south along the River Colne, parallel to the modern M25 motorway west of Heathrow Airport. It opened from West Drayton on the Great Western Main Line to Colnbrook in 1884 and reached Staines the next year.

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v t e Staines & West Drayton Railway
Legend
Uxbridge (Vine Street) branch line Great Western Main Line to Paddington West Drayton Great Western Main Line to Reading M4–M25 Thorney Interchange A4 road Colnbrook Estate Halt Colnbrook Colnbrook Cargo Centre Old Bath Road Poyle Estate Halt Poyle Halt M25 (line severed) Yeoveney Halt Staines Moor Junction (World War II link) Staines–Windsor line to Windsor & Eton Riverside River Wraysbury A30 road Reversing point for oil trains from Windsor line Oil terminal link 1981–1991 Oil terminal 1964–1991 Staines West River Colne Staines High Street Waterloo–Reading line to Reading Staines Waterloo–Reading line to Waterloo

By 1961 it had five intermediate stations but local passenger traffic failed to develop. The area is sparsely populated, being in the flood plain of the river Colne and with the large Staines and Wraysbury reservoirs on both sides of the line. The line was closed to passengers on 29 March 1965 as a consequence of the Beeching cuts.^[1]

The promoters had wanted a connection at Staines to the London and South Western Railway but that company would not allow the Great Western Railway access and the S&WDR terminated at a separate station, converted from a Georgian house. A connection of sorts between the two lines developed through the sidings and turntables of the Staines Linoleum Company's factory but the first purpose-built link was a curve laid in 1940 from Staines Moor Junction some three chains south of Yeoveney Halt^[2] to an east-facing connection on the Southern Railway east-bound route to give a diversionary route should central London north–south routes be cut by bombing.

The proposed Airtrack-Lite rail link from Heathrow Airport through Staines would entail laying track near the former southern part of the S&WDR route.^[4]

Phase 2 of the proposed Windsor Link Railway would link the existing northern section to a new interchange station at Poyle then onward to both Slough and Staines via an extended Staines to Windsor Line.