SW1A 1 postcode sector in the SW1A district

SW1A 1 is a sector of the SW1A district: every postcode that starts SW1A 1. It has 67 postcodes in use, 20 of them large-user postcodes. A large-user postcode is one Royal Mail gives to a single address that gets a lot of mail.

Not sure what a sector is? UK postcode format explained.

Every postcode in the SW1A 1 sector, by gigabit broadband

Map of every postcode in the SW1A 1 sector, by gigabit broadband Of the 67 postcodes in the SW1A 1 sector that ONS places, 10 have no home or business that can get gigabit, 11 have some that can, 37 can all get it and 9 have no Ofcom figure. One group of postcodes without gigabit is outlined: 8 postcodes without gigabit. Places named: St James's. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. A3212A4A302A3216 SW1A 1BH: no Ofcom figureSW1A 1NY: no Ofcom figureSW1A 1RB: no Ofcom figureSW1A 1YT: no Ofcom figureSW1A 1BB: gigabit for allSW1A 1BW: gigabit for allSW1A 1DD: gigabit for allSW1A 1EA: gigabit for allSW1A 1EE: gigabit for allSW1A 1EF: gigabit for allSW1A 1ER: gigabit for allSW1A 1ES: gigabit for allSW1A 1HA: gigabit for allSW1A 1JB: gigabit for allSW1A 1JD: gigabit for allSW1A 1JG: gigabit for allSW1A 1JT: gigabit for allSW1A 1LA: gigabit for allSW1A 1LD: gigabit for allSW1A 1LE: gigabit for allSW1A 1LN: gigabit for allSW1A 1LP: gigabit for allSW1A 1LR: gigabit for allSW1A 1LS: gigabit for allSW1A 1LY: gigabit for allSW1A 1NE: gigabit for allSW1A 1NF: gigabit for allSW1A 1NJ: gigabit for allSW1A 1NN: gigabit for allSW1A 1NX: gigabit for allSW1A 1PH: gigabit for allSW1A 1PJ: gigabit for allSW1A 1PL: gigabit for allSW1A 1RA: gigabit for allSW1A 1RD: gigabit for allSW1A 1RE: gigabit for allSW1A 1RN: gigabit for allSW1A 1BA: some gigabitSW1A 1BG: some gigabitSW1A 1DH: some gigabitSW1A 1DP: some gigabitSW1A 1HD: some gigabitSW1A 1NH: some gigabitSW1A 1NP: some gigabitSW1A 1NR: some gigabitSW1A 1NS: some gigabitSW1A 1AA: no gigabitSW1A 1AB: no gigabitSW1A 1AG: no gigabitSW1A 1BD: no gigabitSW1A 1BJ: no gigabitSW1A 1BL: no gigabitSW1A 1BQ: no gigabitSW1A 1DA: no gigabitSW1A 1DR: no gigabitSW1A 1JR: no gigabit St James's 8 postcodes without gigabit, outlined: this goes to SW1A 1BQ, the one nearest the middle of them8 postcodes without gigabit Map of every postcode in the SW1A 1 sector, by gigabit broadband Of the 67 postcodes in the SW1A 1 sector that ONS places, 10 have no home or business that can get gigabit, 11 have some that can, 37 can all get it and 9 have no Ofcom figure. One group of postcodes without gigabit is outlined: 8 postcodes without gigabit. Places named: St James's. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. A3212 St James's 8 postcodes without gigabit, outlined: this goes to SW1A 1BQ, the one nearest the middle of them8 postcodes without gigabit
  • No home or business can get gigabit: 10
  • Some can get gigabit: 11
  • Every home and business can get gigabit: 37
  • Ofcom gives no figure: 9
  • Outline: where 5 or more postcodes without gigabit lie together

Of the 67 postcodes in the SW1A 1 sector that ONS places, 10 have no home or business that can get gigabit, 11 have some that can, 37 can all get it and 9 have no Ofcom figure.

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. 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.

Sources: ONS Postcode Directory, August 2026, loaded 20 October 2026; Ofcom Connected Nations, Connected Nations, Spring 2026; roads, rivers and built-up areas: Ordnance Survey open maps. 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.

Postcodes without gigabit

SW1A 1AASW1A 1ABSW1A 1AGSW1A 1BDSW1A 1BJSW1A 1BLSW1A 1BQSW1A 1DASW1A 1DRSW1A 1JR

Where the postcodes without gigabit lie together

  • 8 postcodes without gigabit, outlined on the map. SW1A 1BQ, is the one nearest the middle of them.

What do homes sell for in SW1A 1?

HM Land Registry records no standard sales of homes in SW1A 1 in the 12 months to September 2026.

Standard sales of homes at market value at the postcodes that start SW1A 1. A typical price is the median, the middle sale, given from 5 sales or more.

How we work this out: house prices by postcode

Source: HM Land Registry Price Paid Data, files dated 28 October 2026.

Postcodes in SW1A 1

Pick a postcode to see its council and MP, broadband, flood risk, what homes sell for, council tax, the nearest schools and stations, and crime around it.

SW1A 1AASW1A 1ABSW1A 1AGSW1A 1AHSW1A 1BASW1A 1BBSW1A 1BDSW1A 1BGSW1A 1BHSW1A 1BJSW1A 1BLSW1A 1BNSW1A 1BQSW1A 1BSSW1A 1BWSW1A 1DASW1A 1DDSW1A 1DHSW1A 1DPSW1A 1DRSW1A 1EASW1A 1EESW1A 1EFSW1A 1EGSW1A 1ERSW1A 1ESSW1A 1HASW1A 1HDSW1A 1HJSW1A 1JBSW1A 1JDSW1A 1JGSW1A 1JRSW1A 1JTSW1A 1LASW1A 1LDSW1A 1LESW1A 1LNSW1A 1LPSW1A 1LRSW1A 1LSSW1A 1LYSW1A 1LZSW1A 1NESW1A 1NFSW1A 1NHSW1A 1NJSW1A 1NNSW1A 1NPSW1A 1NRSW1A 1NSSW1A 1NXSW1A 1NYSW1A 1PHSW1A 1PJSW1A 1PLSW1A 1RASW1A 1RBSW1A 1RDSW1A 1RESW1A 1RGSW1A 1RJSW1A 1RLSW1A 1RNSW1A 1RPSW1A 1YTSW1A 1ZA

Source: ONS Postcode Directory, August 2026, loaded 20 October 2026. Postcodes that have ended are not listed.

What council am I in? The council, borough or local authority for a postcode, and the county council where there is one. What ward am I in? The ward for a postcode, with its council, constituency and parish.

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Where the facts on this page come from

Contains public sector information licensed under the Open Government Licence v3.0. Contains HM Land Registry data © Crown copyright and database right 2021. This data is licensed under the Open Government Licence v3.0.

Licence: Open Government Licence v3.0.

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