Harrow is a large town in Greater London, England, and serves as the principal settlement of the London Borough of Harrow. Lying about 10.5 miles (16.9 km) north-west of Central London and 5.4 miles (8.7 km) south of Watford. The wider borough is also made up of Pinner and Stanmore.
The modern town of Harrow grew out at the foot of Harrow Hill, in what was historically called Greenhill. With the arrival of the Metropolitan Railway in the 19th century, the centre of Harrow moved to Greenhill and it grew as the unofficial "capital" of the Metroland suburbia in the early 20th century; the station is on one of the railway corridors between London and the Chilterns. Meanwhile, Harrow & Wealdstone station is on the West Coast Main Line. Workers were attracted to the area with the opening of several factories in Wealdstone; Harrow played a role in the development of photography by the large Kodak plant, which operated for more than a century.
Historically in the hundred of Gore, county of Middlesex, the merged Harrow was a municipal borough before it became a part of Greater London in 1965. Today, the historic area is distinguished as Harrow on the Hill and is a conservation area with listed buildings of Georgian architecture and home to the famous Harrow School. The modern-day town meanwhile is an established commercial centre of outer north-west London and houses a campus of the University of Westminster.
Central Harrow forms a commercial hub in the north-west of Greater London, with many retail outlets and commercial offices, and increasingly residential apartments in more recent regeneration schemes. Harrow is classified as one of 13 metropolitan centres in the London Plan.
The area has two shopping centres, St Anns and St George's, containing several chain stores typical on British high streets. There are also parades of shops throughout Station Road and the ascending, traditional College Road, and over 300 metres of a fully pedestranised shopping/café streets roads. A large Debenhams department store is on Station Road, as well as large Morrisons and Tesco superstores. Harrow has 1,128,050 square feet of total town centre floor space.
St George's and St Anns, give Harrow a stronger competitive retail standing. In 2015 Harrow ranked 99th in the Hot 100 UK retail locations published by CACI; it was 5th in Greater London. Harrow was ranked 59th in the nation-wide "High Street Investment Ranking" carried out by Knight Frank, and 6th in Greater London beaten by Uxbridge and Richmond.
Harrow has a population of over 251,200 people. Harrow also forms part of the Greater London metropolitan area which has a population of over 14,372,596 people.