TW1 1 postcode sector in the TW1 district

TW1 1 is a sector of the TW1 district: every postcode that starts TW1 1. It has 177 postcodes in use, 5 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 1 sector, by flood risk

Map of every postcode in the TW1 1 sector, by flood risk Of the 177 postcodes in the TW1 1 sector that ONS places, 4 have a home or business at high risk, 45 are at low risk at worst, 24 are at very low risk only and 104 are not on the Environment Agency's at-risk list. Places named: St Margarets & North Twickenham. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A310 TW1 1AA: not on the flood risk listTW1 1AF: not on the flood risk listTW1 1AH: not on the flood risk listTW1 1AJ: not on the flood risk listTW1 1AL: not on the flood risk listTW1 1AQ: not on the flood risk listTW1 1AU: not on the flood risk listTW1 1AW: not on the flood risk listTW1 1AX: not on the flood risk listTW1 1AY: not on the flood risk listTW1 1AZ: not on the flood risk listTW1 1BA: not on the flood risk listTW1 1BB: not on the flood risk listTW1 1BE: not on the flood risk listTW1 1BH: not on the flood risk listTW1 1BJ: not on the flood risk listTW1 1BL: not on the flood risk listTW1 1BN: not on the flood risk listTW1 1BP: not on the flood risk listTW1 1BS: not on the flood risk listTW1 1BT: not on the flood risk listTW1 1BU: not on the flood risk listTW1 1BW: not on the flood risk listTW1 1BX: not on the flood risk listTW1 1BY: not on the flood risk listTW1 1BZ: not on the flood risk listTW1 1DA: not on the flood risk listTW1 1DQ: not on the flood risk listTW1 1DS: not on the flood risk listTW1 1DX: not on the flood risk listTW1 1EA: not on the flood risk listTW1 1EE: not on the flood risk listTW1 1EF: not on the flood risk listTW1 1EG: not on the flood risk listTW1 1EJ: not on the flood risk listTW1 1EL: not on the flood risk listTW1 1EN: not on the flood risk listTW1 1EQ: not on the flood risk listTW1 1ER: not on the flood risk listTW1 1ET: not on the flood risk listTW1 1EU: not on the flood risk listTW1 1EW: not on the flood risk listTW1 1EX: not on the flood risk listTW1 1EY: not on the flood risk listTW1 1EZ: not on the flood risk listTW1 1FD: not on the flood risk listTW1 1FE: not on the flood risk listTW1 1HA: not on the flood risk listTW1 1HB: not on the flood risk listTW1 1HD: not on the flood risk listTW1 1HG: not on the flood risk listTW1 1HU: not on the flood risk listTW1 1HX: not on the flood risk listTW1 1JA: not on the flood risk listTW1 1JB: not on the flood risk listTW1 1LJ: not on the flood risk listTW1 1LR: not on the flood risk listTW1 1LU: not on the flood risk listTW1 1LX: not on the flood risk listTW1 1LZ: not on the flood risk listTW1 1NA: not on the flood risk listTW1 1NB: not on the flood risk listTW1 1ND: not on the flood risk listTW1 1NE: not on the flood risk listTW1 1NG: not on the flood risk listTW1 1NH: not on the flood risk listTW1 1NJ: not on the flood risk listTW1 1NL: not on the flood risk listTW1 1NN: not on the flood risk listTW1 1NP: not on the flood risk listTW1 1NQ: not on the flood risk listTW1 1NW: not on the flood risk listTW1 1PG: not on the flood risk listTW1 1PJ: not on the flood risk listTW1 1PL: not on the flood risk listTW1 1PN: not on the flood risk listTW1 1PR: not on the flood risk listTW1 1PS: not on the flood risk listTW1 1PU: not on the flood risk listTW1 1PX: not on the flood risk listTW1 1PY: not on the flood risk listTW1 1QB: not on the flood risk listTW1 1QD: not on the flood risk listTW1 1QE: not on the flood risk listTW1 1QF: not on the flood risk listTW1 1QG: not on the flood risk listTW1 1QH: not on the flood risk listTW1 1QQ: not on the flood risk listTW1 1RA: not on the flood risk listTW1 1RB: not on the flood risk listTW1 1RD: not on the flood risk listTW1 1RE: not on the flood risk listTW1 1RF: not on the flood risk listTW1 1RG: not on the flood risk listTW1 1RJ: not on the flood risk listTW1 1RL: not on the flood risk listTW1 1RQ: not on the flood risk listTW1 1RR: not on the flood risk listTW1 1RS: not on the flood risk listTW1 1RT: not on the flood risk listTW1 1RW: not on the flood risk listTW1 1SD: not on the flood risk listTW1 1AR: very low flood risk onlyTW1 1BD: very low flood risk onlyTW1 1FA: very low flood risk onlyTW1 1FB: very low flood risk onlyTW1 1FF: very low flood risk onlyTW1 1JN: very low flood risk onlyTW1 1JP: very low flood risk onlyTW1 1JT: very low flood risk onlyTW1 1JU: very low flood risk onlyTW1 1JW: very low flood risk onlyTW1 1JY: very low flood risk onlyTW1 1LA: very low flood risk onlyTW1 1LB: very low flood risk onlyTW1 1LD: very low flood risk onlyTW1 1LE: very low flood risk onlyTW1 1LF: very low flood risk onlyTW1 1PH: very low flood risk onlyTW1 1PW: very low flood risk onlyTW1 1PZ: very low flood risk onlyTW1 1QJ: very low flood risk onlyTW1 1QL: very low flood risk onlyTW1 1QN: very low flood risk onlyTW1 1QT: very low flood risk onlyTW1 1RH: very low flood risk onlyTW1 1AG: low flood risk at worstTW1 1AN: low flood risk at worstTW1 1AP: low flood risk at worstTW1 1AS: low flood risk at worstTW1 1DB: low flood risk at worstTW1 1DE: low flood risk at worstTW1 1DF: low flood risk at worstTW1 1DG: low flood risk at worstTW1 1EB: low flood risk at worstTW1 1HP: low flood risk at worstTW1 1HR: low flood risk at worstTW1 1HS: low flood risk at worstTW1 1HT: low flood risk at worstTW1 1HW: low flood risk at worstTW1 1JE: low flood risk at worstTW1 1JF: low flood risk at worstTW1 1JG: low flood risk at worstTW1 1JQ: low flood risk at worstTW1 1JR: low flood risk at worstTW1 1JS: low flood risk at worstTW1 1JX: low flood risk at worstTW1 1LG: low flood risk at worstTW1 1LH: low flood risk at worstTW1 1LQ: low flood risk at worstTW1 1LY: low flood risk at worstTW1 1NF: low flood risk at worstTW1 1NZ: low flood risk at worstTW1 1PA: low flood risk at worstTW1 1PB: low flood risk at worstTW1 1PD: low flood risk at worstTW1 1PE: low flood risk at worstTW1 1PF: low flood risk at worstTW1 1PP: low flood risk at worstTW1 1PQ: low flood risk at worstTW1 1QP: low flood risk at worstTW1 1QR: low flood risk at worstTW1 1QS: low flood risk at worstTW1 1QU: low flood risk at worstTW1 1QW: low flood risk at worstTW1 1QX: low flood risk at worstTW1 1QY: low flood risk at worstTW1 1RP: low flood risk at worstTW1 1RU: low flood risk at worstTW1 1RX: low flood risk at worstTW1 1RY: low flood risk at worstTW1 1DD: high flood riskTW1 1ES: high flood riskTW1 1JD: high flood riskTW1 1QZ: high flood risk St Margarets & North Twickenham Map of every postcode in the TW1 1 sector, by flood risk Of the 177 postcodes in the TW1 1 sector that ONS places, 4 have a home or business at high risk, 45 are at low risk at worst, 24 are at very low risk only and 104 are not on the Environment Agency's at-risk list. Places named: St Margarets & North Twickenham. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. St Margarets & North Twickenham
  • A home or business at high risk: 4
  • At medium risk at worst: 0
  • At low risk at worst: 45
  • At very low risk only: 24
  • Not on the at-risk list: 104

Of the 177 postcodes in the TW1 1 sector that ONS places, 4 have a home or business at high risk, 45 are at low risk at worst, 24 are at very low risk only and 104 are not on the Environment Agency's at-risk list.

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.

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026, the centre point of each postcode; flood risk: Environment Agency, published 6 July 2026; 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 postcodes at high risk

Beside each: how many of its homes and businesses the Environment Agency puts at that risk.

TW1 1QZ2 at high riskTW1 1DD1 at high riskTW1 1ES1 at high riskTW1 1JD1 at high risk

What do homes sell for in TW1 1?

Homes in TW1 1 sold for a typical £678,500 in the 12 months to August 2026, across 106 sales, down 7.7% on the 12 months before, HM Land Registry's figures show.

£678,500 typical price, the 12 months to August 2026
£735,000 12 months to August 2025
▼ down 7.7% on the 12 months before
  • Detached 3 sales, too few to price
  • Semi-detached £1,100,000 19 sales
  • Terraced £1,107,500 36 sales
  • Flat or maisonette £530,000 48 sales

Each bar is that kind's typical price, against the most expensive kind here.

Standard sales of homes at market value at the postcodes that start TW1 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 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

Postcodes in TW1 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.

TW1 1AATW1 1AFTW1 1AGTW1 1AHTW1 1AJTW1 1ALTW1 1ANTW1 1APTW1 1AQTW1 1ARTW1 1ASTW1 1AUTW1 1AWTW1 1AXTW1 1AYTW1 1AZTW1 1BATW1 1BBTW1 1BDTW1 1BETW1 1BHTW1 1BJTW1 1BLTW1 1BNTW1 1BPTW1 1BSTW1 1BTTW1 1BUTW1 1BWTW1 1BXTW1 1BYTW1 1BZTW1 1DATW1 1DBTW1 1DDTW1 1DETW1 1DFTW1 1DGTW1 1DQTW1 1DSTW1 1DXTW1 1EATW1 1EBTW1 1EETW1 1EFTW1 1EGTW1 1EJTW1 1ELTW1 1ENTW1 1EQTW1 1ERTW1 1ESTW1 1ETTW1 1EUTW1 1EWTW1 1EXTW1 1EYTW1 1EZTW1 1FATW1 1FBTW1 1FDTW1 1FETW1 1FFTW1 1HATW1 1HBTW1 1HDTW1 1HGTW1 1HPTW1 1HRTW1 1HSTW1 1HTTW1 1HUTW1 1HWTW1 1HXTW1 1JATW1 1JBTW1 1JDTW1 1JETW1 1JFTW1 1JGTW1 1JNTW1 1JPTW1 1JQTW1 1JRTW1 1JSTW1 1JTTW1 1JUTW1 1JWTW1 1JXTW1 1JYTW1 1LATW1 1LBTW1 1LDTW1 1LETW1 1LFTW1 1LGTW1 1LHTW1 1LJTW1 1LQTW1 1LRTW1 1LUTW1 1LXTW1 1LYTW1 1LZTW1 1NATW1 1NBTW1 1NDTW1 1NETW1 1NFTW1 1NGTW1 1NHTW1 1NJTW1 1NLTW1 1NNTW1 1NPTW1 1NQTW1 1NWTW1 1NZTW1 1PATW1 1PBTW1 1PDTW1 1PETW1 1PFTW1 1PGTW1 1PHTW1 1PJTW1 1PLTW1 1PNTW1 1PPTW1 1PQTW1 1PRTW1 1PSTW1 1PUTW1 1PWTW1 1PXTW1 1PYTW1 1PZTW1 1QBTW1 1QDTW1 1QETW1 1QFTW1 1QGTW1 1QHTW1 1QJTW1 1QLTW1 1QNTW1 1QPTW1 1QQTW1 1QRTW1 1QSTW1 1QTTW1 1QUTW1 1QWTW1 1QXTW1 1QYTW1 1QZTW1 1RATW1 1RBTW1 1RDTW1 1RETW1 1RFTW1 1RGTW1 1RHTW1 1RJTW1 1RLTW1 1RPTW1 1RQTW1 1RRTW1 1RSTW1 1RTTW1 1RUTW1 1RWTW1 1RXTW1 1RYTW1 1SDTW1 1WGTW1 1XU

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026. Postcodes that have ended are not listed. See all our data sources

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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