London Borough of Harrow

What broadband can you get in Harrow?

Across Harrow, 90% of homes and businesses can get gigabit broadband and 78% full fibre, Ofcom says.

For one street, look up its postcode: each postcode page has its own figures. A provider's checker answers for one address.

Source: Ofcom, Connected Nations, Spring 2026, data for January 2026, Open Government Licence v3.0. How we use it

How much is council tax in Harrow?

Band D for 2026‑27: £2,511 a year

Every other band is a fixed share of Band D, set in law. Band A is two thirds of it; band H is twice it.

Band D is the average across the area, including the county council, police, fire and combined authority charges, and parish or town council charges, so a home's own bill can be a little different. Bands other than D are worked out by us from Band D and rounded to the pound. A home's bill also takes off any discount, such as 25% for one adult living alone.

Source: Ministry of Housing, Communities and Local Government, Council Tax levels set by local authorities in England 2026 to 2027, Table 10, published 25 March 2026, Open Government Licence v3.0. How we use it

How many homes in Harrow are at risk of flooding?

Across Harrow, the Environment Agency puts 1,486 homes and businesses in an area at high or medium risk of flooding from rivers or the sea, at 324 postcodes with any property at risk.

High: 3.3% or more a year (1 in 30). Medium: 1% to 3.3% a year. Low: 0.1% to 1% a year. Very low: under 0.1% a year (1 in 1,000). Each band is the chance of flooding in any one year.

Homes and businesses in an area at risk of flooding from rivers or the sea, as the Environment Agency counts them. It leaves out surface water, groundwater and sewers. Each postcode page has its own figures and its flood warning areas.

Source: Environment Agency, Risk of Flooding from Rivers and Sea (postcodes in areas at risk), published 6 July 2026, Open Government Licence v3.0. How we use it

Surface water

In Harrow the Environment Agency counts 9,109 properties at high risk of flooding from surface water (8.7% of all its properties), 5,723 at medium risk (5.4%) and 10,884 at low risk (10.3%). Surface water is rain that cannot drain away fast enough.

Source: Environment Agency, Risk of Flooding from Surface Water, properties at risk by local authority, version 2025-09, listed 18 September 2026, Open Government Licence v3.0. How we use it

Postcode districts with postcodes in Harrow

• HA1 postcode district915 of its 960 postcodes in use are in Harrow.
• HA2 postcode districtAll 966 of its postcodes in use are in Harrow.
• HA3 postcode district974 of its 1,262 postcodes in use are in Harrow.
• HA4 postcode district4 of its 1,137 postcodes in use are in Harrow.
• HA5 postcode district831 of its 1,094 postcodes in use are in Harrow.
• HA7 postcode district836 of its 847 postcodes in use are in Harrow.
• HA8 postcode district396 of its 1,402 postcodes in use are in Harrow.
• NW9 postcode district4 of its 1,483 postcodes in use are in Harrow.
• UB5 postcode district17 of its 840 postcodes in use are in Harrow.
• UB6 postcode district1 of its 860 postcodes in use is in Harrow.
• WD23 postcode district3 of its 769 postcodes in use are in Harrow.

Counted from the ONS Postcode Directory. A postcode district is drawn for sorting post, so many cross a council's edge.

Its postcode areas

Beside each area: how many of its postcodes in use are in Harrow.