London Borough of Hillingdon

What broadband can you get in Hillingdon?

Across Hillingdon, 93% of homes and businesses can get gigabit broadband and 81% 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 Hillingdon?

Band D for 2026‑27: £2,045 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 Hillingdon are at risk of flooding?

Across Hillingdon, the Environment Agency puts 2,372 homes and businesses in an area at high or medium risk of flooding from rivers or the sea, at 447 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 Hillingdon the Environment Agency counts 9,911 properties at high risk of flooding from surface water (7.3% of all its properties), 6,994 at medium risk (5.1%) and 16,664 at low risk (12.3%). 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 Hillingdon

• HA4 postcode district1,133 of its 1,137 postcodes in use are in Hillingdon.
• HA5 postcode district262 of its 1,094 postcodes in use are in Hillingdon.
• HA6 postcode district527 of its 721 postcodes in use are in Hillingdon.
• TW6 postcode district120 of its 124 postcodes in use are in Hillingdon.
• TW14 postcode district4 of its 476 postcodes in use are in Hillingdon.
• TW19 postcode district2 of its 386 postcodes in use are in Hillingdon.
• UB1 postcode district4 of its 615 postcodes in use are in Hillingdon.
• UB2 postcode district4 of its 532 postcodes in use are in Hillingdon.
• UB3 postcode districtAll 987 of its postcodes in use are in Hillingdon.
• UB4 postcode districtAll 704 of its postcodes in use are in Hillingdon.
• UB5 postcode district20 of its 840 postcodes in use are in Hillingdon.
• UB7 postcode districtAll 632 of its postcodes in use are in Hillingdon.
• UB8 postcode district823 of its 825 postcodes in use are in Hillingdon.
• UB9 postcode district205 of its 431 postcodes in use are in Hillingdon.
• UB10 postcode districtAll 712 of its postcodes in use are in Hillingdon.
• UB11 postcode districtAll 19 of its postcodes in use are in Hillingdon.
• WD3 postcode district9 of its 1,281 postcodes in use are in Hillingdon.

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 Hillingdon.