Harrow-on-the-Hill station there will only be step-free interchange between Metropolitan line trains travelling in the same direction) and "Entry and exit not accessible" (see station description above). The Lowlands Road entrance (which is also the route to the car park and the car passenger pick up and set down area) has the fewer steps. There is a bus station located next to the station offering London Buses services right across North London. 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
London Underground infrastructure is proposed that the Northern line be extended to Nine Elms and Battersea. Construction started in 2015, and it is hoped the stations will open in 2020. There are suggestions that the Bakerloo line be extended to Lewisham, and then taking over services on the Hayes Line to relieve capacity on the suburban rail network. The London Borough of Hillingdon has proposed that the Central line be extended from West Ruislip to Uxbridge via Ickenham, claiming the extension would cut traffic on the A40 in the area. The signalling system on the Northern line is being replaced to increase capacity