From the Wikipedia page [1]
A closed station on the Piccadilly Line opened 15 December 1906; closed 19 September 1932, between King's Cross St. Pancras Station and Caledonian Road Station. It has been suggested that this station may be reopened to serve new developments on the nearby King's Cross railway lands, although the number of passengers expected to use the station may not be high enough to justify the cost of refitting it to modern standards. The road the station served, 'York Road', has since been renamed 'York Way'.
The Abandoned Stations page is [2] and the Disused Stations page [3]. More information here and a video here.
A London Assembly question here - linking to other questions.