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 were originally maple wood, then aluminium from 1963, and this had been replaced with plastic or rubber following an increase in serious injuries following falls. However, following the King's Cross fire, aluminium treads have been used. There are 426 escalators on the London Underground system and the longest, at , is at Angel. The shortest, at Stratford, gives a vertical rise of . There are 184 lifts across the Underground, with 72 stations having step-free access from street to train. Major efforts have taken place to improve accessibility across the Underground, with the Jubilee line extension having lifts from opening