The Metropolitan Railway constructed the line between Harrow-on-the-Hill and Uxbridge and commenced services on 4 July 1904 with, initially, Ruislip being the only intermediate stop. At first, services were operated bysteam trains, but track electrification was completed in the subsequent months and electric trains began operating on 1 January 1905. The formation was made wide enough at Ruislip to enable another pair of tracks to be constructed as passing loops or additional platform roads. Neither has ever occurred. On 1 March 1910, an extension of the District line from South Harrow to connect with the Metropolitan Railway at Rayners Lane was opened enabling District line trains to serve stations between Rayners Lane and Uxbridge from that date. On 23 October 1933, District line services were replaced by Piccadilly line trains. Currently, only the station's eastbound platform has step-free access. Passengers who wish to travel in the Uxbridge direction must travel to Northwick Park or Sudbury Town and change direction there. In 2018, it was announced that the station will be made fully accessible, as part of a £200m investment to increase the number of accessible stations on the Tube. It is possible to reverse trains from west to east at Ruislip. Trains must detrain in the westbound platform and then continue for approximately half a mile to a reversing siding leading to Ruislip Depot. After reversing, the train must come back the way it came and enter the eastbound platform by means of a crossover. Unfortunately, while this manoeuvre is carried out, both the westbound and eastbound services are held up. Therefore, this manoeuvre is usually only done by some peak-hour Piccadilly line trains due to the inconvenience it causes. There was formerly a crossover to the east of the station enabling trains to leave the westbound platform in an easterly direction, and a goods yard to the north of the line.
Services
Metropolitan line
The Metropolitan Line is the only line to operate an express service, though currently for Metropolitan Line trains on the Uxbridge branch this is eastbound only in the morning peaks Monday to Friday. The off-peak service in trains per hour is:
8tph Eastbound to Aldgate via Baker Street
8tph Westbound to Uxbridge
The morning peak service in trains per hour is:
2tph Eastbound to Aldgate via Baker Street
4tph Eastbound to Aldgate via Baker Street
4tph Eastbound to Baker Street
10tph Westbound to Uxbridge
The evening peak service in trains per hour is:
7tph Eastbound to Aldgate via Baker Street
3tph Eastbound to Baker Street
10tph Westbound to Uxbridge
Piccadilly line
Between Rayners Lane and Uxbridge there is no Piccadilly Line service before approximately 06:30 and 08:45, except for one early morning departure from Uxbridge at 05:18 and 06:46. The off-peak service in trains per hour is:
