SW1H postcode district: City of Westminster and around

SW1H is a postcode district in England, with 91 postcodes in use in 2 sectors. It has postcodes in City of Westminster and Wandsworth. It is split between 2 councils: Westminster (88 postcodes) and Wandsworth (3).

Postcodes in use: 91
Sectors: 2
Councils: 2 councils
Places: 2 places

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026. See all our data sources

Every postcode in SW1H, and which are new since 2020

New since 2020: 6
In use before 2020: 85
Outline: where 5 or more new postcodes since 2020 lie together

Of the 91 postcodes in SW1H that ONS places, 6 are new since 2020 and 85 were in use before 2020.

Each mark is a postcode's centre point as ONS gives it, not a building. Press one to see its postcode and open its page. New since 2020 means it came into use in January 2020 or later. A dashed outline shows where 5 or more lie within 150 metres of each other. It is not a boundary, and no boundary is drawn. Where marks overlap, the one first in the key is drawn; the counts include every postcode. Names in italics are council wards: we hold no town or village names here.

The middle of its postcodes: latitude 51.4986, longitude -0.1335. Open this area on OpenStreetMap

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026, the centre point of each postcode; when each came into use: the same directory; roads, rivers and built-up areas: Contains OS data © Crown copyright and database right 2026. Drawn by us. Street map: Ordnance Survey, OS Open Zoomstack, Open Government Licence v3.0, drawn with MapLibre. How we use them

The 5 newest postcodes

SW1H 0NEMarch 2023 SW1H 0ARAugust 2022 SW1H 0BPAugust 2022 SW1H 0AJJuly 2022 SW1H 0ATDecember 2021

Where the new postcodes lie together

6 new postcodes since 2020, outlined on the map. SW1H 0NE, is the newest of them.

What broadband can you get in SW1H?

Ofcom reports on 81 of the 91 postcodes in SW1H. At 66 of them every home and business can get gigabit broadband.

Postcodes where every home can get gigabit66 of 81

Postcodes where every home can get superfast66 of 81

Ofcom gives each postcode's share of homes and businesses, not how many there are, so these count postcodes. Each postcode page has its own figures. A provider's checker answers for one address.

Check one address on Ofcom's checker

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

Is SW1H at risk of flooding?

75 of the 91 postcodes in SW1H have a home or business in an area at risk of flooding from rivers or the sea, the Environment Agency says. At those, it puts none of the homes and businesses in an area at high or medium risk.

Homes and businesses in an area at risk, at 75 of 91 postcodes Very low: 1,280

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, added up over the postcodes. It is for the land, not each building, and 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

What do homes sell for in SW1H?

Homes in SW1H sold for a typical £837,500 in the 12 months to August 2026, across 20 sales, down 37.3% on the 12 months before, HM Land Registry's figures show.

£837,500 typical price, the 12 months to August 2026

£1,335,000 12 months to August 2025

▼ down 37.3% on the 12 months before

Flat or maisonette £837,500 20 sales

Standard sales of homes at market value. A typical price is the median, the middle sale. Sales take weeks to be registered, so the last month or two are incomplete. Each postcode page gives the figure for its own postcode sector.

Source: HM Land Registry Price Paid Data, files dated 28 September 2026. Contains HM Land Registry data © Crown copyright and database right 2021. This data is licensed under the Open Government Licence v3.0. How we use it