SW1Y 5 postcode sector in the SW1Y district

SW1Y 5 is a sector of the SW1Y district: every postcode that starts SW1Y 5. It has 45 postcodes in use, 17 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 SW1Y 5 sector, by gigabit broadband

Map of every postcode in the SW1Y 5 sector, by gigabit broadband Of the 45 postcodes in the SW1Y 5 sector that ONS places, 8 have some that can, 31 can all get it and 6 have no Ofcom figure. One postcode lies beyond the edge and is listed under the map. Places named: St James's. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A400 SW1Y 5AS: no Ofcom figureSW1Y 5NQ: no Ofcom figureSW1Y 5AA: gigabit for allSW1Y 5AD: gigabit for allSW1Y 5AF: gigabit for allSW1Y 5AH: gigabit for allSW1Y 5AN: gigabit for allSW1Y 5AQ: gigabit for allSW1Y 5AT: gigabit for allSW1Y 5AU: gigabit for allSW1Y 5BF: gigabit for allSW1Y 5BG: gigabit for allSW1Y 5DG: gigabit for allSW1Y 5ED: gigabit for allSW1Y 5EP: gigabit for allSW1Y 5ER: gigabit for allSW1Y 5ES: gigabit for allSW1Y 5EW: gigabit for allSW1Y 5HD: gigabit for allSW1Y 5HU: gigabit for allSW1Y 5HZ: gigabit for allSW1Y 5JG: gigabit for allSW1Y 5JH: gigabit for allSW1Y 5JN: gigabit for allSW1Y 5JQ: gigabit for allSW1Y 5LU: gigabit for allSW1Y 5NG: gigabit for allSW1Y 5NP: gigabit for allSW1Y 5BJ: gigabit for allSW1Y 5AG: some gigabitSW1Y 5BL: some gigabitSW1Y 5BN: some gigabitSW1Y 5BQ: some gigabitSW1Y 5EA: some gigabitSW1Y 5EY: some gigabitSW1Y 5HS: some gigabitSW1Y 5LP: some gigabit St James's Map of every postcode in the SW1Y 5 sector, by gigabit broadband Of the 45 postcodes in the SW1Y 5 sector that ONS places, 8 have some that can, 31 can all get it and 6 have no Ofcom figure. One postcode lies beyond the edge and is listed under the map. Places named: St James's. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. St James's
  • No home or business can get gigabit: 0
  • Some can get gigabit: 8
  • Every home and business can get gigabit: 31
  • Ofcom gives no figure: 6

Of the 45 postcodes in the SW1Y 5 sector that ONS places, 8 have some that can, 31 can all get it and 6 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. 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.

Further out, not drawn

This postcode lies well apart from the rest, so the map is drawn without it to show the rest closer; it is in every count.

SW1Y 5ZQ

What do homes sell for in SW1Y 5?

HM Land Registry records 4 sales of homes in SW1Y 5 in the 12 months to September 2026: too few to give a typical price.

  • Flat or maisonette 4 sales, too few to price

Standard sales of homes at market value at the postcodes that start SW1Y 5. 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 SW1Y 5

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.

SW1Y 5AASW1Y 5ADSW1Y 5AFSW1Y 5AGSW1Y 5AHSW1Y 5ANSW1Y 5APSW1Y 5AQSW1Y 5ASSW1Y 5ATSW1Y 5AUSW1Y 5AYSW1Y 5BDSW1Y 5BFSW1Y 5BGSW1Y 5BJSW1Y 5BLSW1Y 5BNSW1Y 5BQSW1Y 5BSSW1Y 5DGSW1Y 5DLSW1Y 5EASW1Y 5EDSW1Y 5EPSW1Y 5ERSW1Y 5ESSW1Y 5EWSW1Y 5EYSW1Y 5HDSW1Y 5HSSW1Y 5HUSW1Y 5HXSW1Y 5HYSW1Y 5HZSW1Y 5JGSW1Y 5JHSW1Y 5JNSW1Y 5JQSW1Y 5LPSW1Y 5LUSW1Y 5NGSW1Y 5NPSW1Y 5NQSW1Y 5ZQ

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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