A station on the Piccadilly Line in Travelcard Zone 5 opened 28 June 1903 as South Harrow & Roxeth on the Metropolitan and District Railway, being extended to Rayners Lane Station in 1910. It was transferred to the Piccadilly Line in 1932, when the line was extended through to Uxbridge Station
More information on the Wikipedia page [1]. The TfL page is [2]. Video here.