From the Wikipedia page 
Colnbrook Estate Halt railway station was a station on the now closed railway line between West Drayton Station and Staines West, on the western edge of London. It was opened on 1 May 1961 by British Railways to serve the Colnbrook Industrial Estate.
The station closed to passengers on 29 March 1965 following the Beeching Report and has been completely demolished although the line through its site serves an aggregate depot and a fuel depot.
See also Colnbrook Railway Station