A terminus of the Metropolitan Line and Piccadilly Line - though orginally served by the Metropolitan District Railway.
Opened in 1904: rebuilt on present site in 1938. The only survivor of what were three stations in Uxbridge - the others being mainline stations on lines from West Drayton and Denham.
The Wikipedia page is [1] and the TfL page is [2].
See also Uxbridge High Street Station and Uxbridge Vine Street Station