London Underground London Underground services at Harrow-on-the-Hill are provided by the
Metropolitan line. The adjacent Underground stations are
Northwick Park (all stations southbound),
Finchley Road (fast southbound),
Moor Park (fast northbound),
North Harrow (all stations northbound) and
West Harrow (towards Uxbridge). The Metropolitan line is unique in operating an express service. "Fast" and "Semi-fast" services (now mostly reserved for peak times) do not stop
between Harrow-on-the-Hill and
Finchley Road. The "Fast" lines at stations between Moor Park, Harrow and Wembley Park have no platforms. Southbound services go to either
Baker Street (4tph) or continue beyond to the line's terminus at
Aldgate (12tph). Off-peak trains from Amersham (2tph), Chesham (2tph) and Uxbridge (8tph) generally terminate at
Aldgate, with a 4tph service from
Watford to Baker Street, however during peak hours trains from all branches go to/from all destinations.
National Rail class 165 bound for
Marylebone National Rail services at Harrow-on-the-Hill are provided by
Chiltern Railways. Services operate between
Marylebone station and
Aylesbury using the separate Network Rail tracks from London to Harrow and sharing London Underground tracks between Harrow and Amersham.
Chiltern Railways started operating in 1996 after the
privatisation of British Rail and typically provide two trains per hour between Aylesbury and London via Harrow. ==Station layout==