TW1 9 postcode sector in the TW1 district

TW1 9 is a sector of the TW1 district: every postcode that starts TW1 9. It has 47 postcodes in use, 28 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 TW1 9 sector, by gigabit broadband

Map of every postcode in the TW1 9 sector, by gigabit broadband Of the 47 postcodes in the TW1 9 sector that ONS places, 19 have no home or business that can get gigabit and 28 have no Ofcom figure. One group of postcodes without gigabit is outlined: 19 postcodes without gigabit. Places named: Isleworth, Twickenham Riverside. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A316A310 TW1 9EY: no Ofcom figureTW1 9SE: no gigabitTW1 9TB: no gigabitTW1 9ZZ: no gigabit IsleworthTwickenham Riverside 19 postcodes without gigabit, outlined: this goes to TW1 9SE, the one nearest the middle of them19 postcodes without gigabit Map of every postcode in the TW1 9 sector, by gigabit broadband Of the 47 postcodes in the TW1 9 sector that ONS places, 19 have no home or business that can get gigabit and 28 have no Ofcom figure. One group of postcodes without gigabit is outlined: 19 postcodes without gigabit. Places named: Isleworth, Twickenham Riverside. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A316A305 IsleworthTwickenham Riverside
  • No home or business can get gigabit: 19
  • Some can get gigabit: 0
  • Every home and business can get gigabit: 0
  • Ofcom gives no figure: 28
  • Outline: where 5 or more postcodes without gigabit lie together

Of the 47 postcodes in the TW1 9 sector that ONS places, 19 have no home or business that can get gigabit and 28 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 600 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

19 postcodes here have no gigabit. These are the 12 first in postcode order.

TW1 9SETW1 9SFTW1 9SGTW1 9SHTW1 9SJTW1 9SLTW1 9SNTW1 9SPTW1 9SQTW1 9SRTW1 9SSTW1 9ST

Where the postcodes without gigabit lie together

  • 19 postcodes without gigabit, outlined on the map. TW1 9SE, is the one nearest the middle of them.

Postcodes in TW1 9

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.

TW1 9EYTW1 9GGTW1 9LDTW1 9NDTW1 9NJTW1 9PBTW1 9PFTW1 9PGTW1 9PJTW1 9PLTW1 9PRTW1 9PSTW1 9QATW1 9QBTW1 9QPTW1 9QSTW1 9QYTW1 9RATW1 9RFTW1 9RQTW1 9RXTW1 9SDTW1 9SETW1 9SFTW1 9SGTW1 9SHTW1 9SJTW1 9SLTW1 9SNTW1 9SPTW1 9SQTW1 9SRTW1 9SSTW1 9STTW1 9SUTW1 9SWTW1 9SXTW1 9SYTW1 9SZTW1 9TATW1 9TBTW1 9TJTW1 9TSTW1 9TTTW1 9TXTW1 9UBTW1 9ZZ

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.

Licence: Open Government Licence v3.0.

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