Harrow-on-the-Hill station Harrow-on-the-Hill station Harrow-on-the-Hill is a London Underground station served by the Metropolitan line and National Rail services, in Travelcard Zone 5. The stations two exits are located between College Road and Lowlands Road in the Greenhill area of Harrow, about half a mile north of the locality from which it takes its name. This is where the branch from Uxbridge joins the main line and where fast and slow lines are divided. The station is the junction of four LU tracks from Baker Street (paired by direction), two Network Rail tracks from Marylebone, four LU tracks (paired by speed) to
Central line (London Underground) GER on 1 May 1903. The line has three junctions: The line has the shortest escalator on the London Underground system, at Stratford (previously at Chancery Lane), with a rise of and at Stratford and Greenford the only stations where escalators take passengers up to the trains. That at Greenford was the last escalator with wooden treads on the system until it was replaced in March 2014. They were exempt from fire regulations because they were outside the tunnel system. The line has the shallowest Tube platforms on the system, at Redbridge, just below the road, and the sharpest curve,