Harrow

The original settlement was at Harrow on the Hill, atop the 408 feet (124 m) Harrow Hill. The modern town centre of Harrow developed at the foot of the hill, in an area historically called Greenhill, following the opening of Harrow-on-the-Hill station on the Metropolitan Railway in 1880. Harrow became the unofficial "capital" of the Metroland suburbia in the early 20th century. Harrow & Wealdstone station on the West Coast Main Line had opened in 1837, but was more distant from Harrow, lying 1.5 miles (2.4 km) north of the hill. Workers were drawn to the area by the opening of several factories in Wealdstone; Harrow was the base of the large Kodak factory, used for the manufacture of photographic materials and R&D, which was in operation for more than a century.

Historically in the hundred of Gore in the county of Middlesex, Harrow became part of Greater London in 1965.