WS1 1 postcode sector in the WS1 district

WS1 1 is a sector of the WS1 district: every postcode that starts WS1 1. It has 108 postcodes in use, 24 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 WS1 1 sector, by flood risk

Map of every postcode in the WS1 1 sector, by flood risk Of the 108 postcodes in the WS1 1 sector that ONS places, 4 have a home or business at high risk, 36 are at medium risk at worst, 3 are at low risk at worst and 65 are not on the Environment Agency's at-risk list. One group of postcodes at high or medium risk is outlined: 39 postcodes at high or medium risk. Places named: St Matthew's. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A4148 WS1 1AB: not on the flood risk listWS1 1AF: not on the flood risk listWS1 1AG: not on the flood risk listWS1 1DB: not on the flood risk listWS1 1DF: not on the flood risk listWS1 1DG: not on the flood risk listWS1 1EG: not on the flood risk listWS1 1EN: not on the flood risk listWS1 1HR: not on the flood risk listWS1 1JA: not on the flood risk listWS1 1JG: not on the flood risk listWS1 1JJ: not on the flood risk listWS1 1JX: not on the flood risk listWS1 1LA: not on the flood risk listWS1 1LF: not on the flood risk listWS1 1NL: not on the flood risk listWS1 1NN: not on the flood risk listWS1 1NP: not on the flood risk listWS1 1NS: not on the flood risk listWS1 1NT: not on the flood risk listWS1 1NW: not on the flood risk listWS1 1PN: not on the flood risk listWS1 1QA: not on the flood risk listWS1 1QD: not on the flood risk listWS1 1QF: not on the flood risk listWS1 1QG: not on the flood risk listWS1 1QL: not on the flood risk listWS1 1QR: not on the flood risk listWS1 1QU: not on the flood risk listWS1 1QW: not on the flood risk listWS1 1RA: not on the flood risk listWS1 1RB: not on the flood risk listWS1 1RH: not on the flood risk listWS1 1RJ: not on the flood risk listWS1 1RL: not on the flood risk listWS1 1RR: not on the flood risk listWS1 1RS: not on the flood risk listWS1 1RZ: not on the flood risk listWS1 1SA: not on the flood risk listWS1 1SQ: not on the flood risk listWS1 1TJ: not on the flood risk listWS1 1TL: not on the flood risk listWS1 1TS: not on the flood risk listWS1 1TU: not on the flood risk listWS1 1UG: not on the flood risk listWS1 1XA: not on the flood risk listWS1 1XB: not on the flood risk listWS1 1XR: not on the flood risk listWS1 1XZ: not on the flood risk listWS1 1YA: not on the flood risk listWS1 1YB: not on the flood risk listWS1 1AA: low flood risk at worstWS1 1DD: low flood risk at worstWS1 1PY: low flood risk at worstWS1 1UZ: medium flood risk at worstWS1 1DA: medium flood risk at worstWS1 1DE: medium flood risk at worstWS1 1DH: medium flood risk at worstWS1 1DP: medium flood risk at worstWS1 1ER: medium flood risk at worstWS1 1EW: medium flood risk at worstWS1 1EX: medium flood risk at worstWS1 1HP: medium flood risk at worstWS1 1JQ: medium flood risk at worstWS1 1JY: medium flood risk at worstWS1 1LG: medium flood risk at worstWS1 1LN: medium flood risk at worstWS1 1LR: medium flood risk at worstWS1 1LW: medium flood risk at worstWS1 1LY: medium flood risk at worstWS1 1NJ: medium flood risk at worstWS1 1NR: medium flood risk at worstWS1 1NU: medium flood risk at worstWS1 1NX: medium flood risk at worstWS1 1PB: medium flood risk at worstWS1 1PL: medium flood risk at worstWS1 1PQ: medium flood risk at worstWS1 1PT: medium flood risk at worstWS1 1QS: medium flood risk at worstWS1 1QZ: medium flood risk at worstWS1 1RE: medium flood risk at worstWS1 1RY: medium flood risk at worstWS1 1SE: medium flood risk at worstWS1 1SL: medium flood risk at worstWS1 1SP: medium flood risk at worstWS1 1SR: medium flood risk at worstWS1 1SX: medium flood risk at worstWS1 1SY: medium flood risk at worstWS1 1TR: medium flood risk at worstWS1 1XS: medium flood risk at worstWS1 1NG: high flood riskWS1 1SZ: high flood riskWS1 1YS: high flood riskWS1 1YT: high flood risk St Matthew's 39 postcodes at high or medium risk, outlined: this goes to WS1 1YT, the one with most homes and businesses at high risk39 postcodes at high or medium risk Map of every postcode in the WS1 1 sector, by flood risk Of the 108 postcodes in the WS1 1 sector that ONS places, 4 have a home or business at high risk, 36 are at medium risk at worst, 3 are at low risk at worst and 65 are not on the Environment Agency's at-risk list. One group of postcodes at high or medium risk is outlined: 39 postcodes at high or medium risk. Places named: St Matthew's. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. St Matthew's
  • A home or business at high risk: 4
  • At medium risk at worst: 36
  • At low risk at worst: 3
  • At very low risk only: 0
  • Not on the at-risk list: 65
  • Outline: where 5 or more postcodes at high or medium risk lie together

Of the 108 postcodes in the WS1 1 sector that ONS places, 4 have a home or business at high risk, 36 are at medium risk at worst, 3 are at low risk at worst and 65 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. 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.

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.

WS1 1YT18 at high riskWS1 1YS14 at high riskWS1 1SZ2 at high riskWS1 1NG1 at high risk

Where the postcodes at high or medium risk lie together

  • 39 postcodes at high or medium risk, outlined on the map. WS1 1YT, is the one with most homes and businesses at high risk.

What do homes sell for in WS1 1?

Homes in WS1 1 sold for a typical £110,000 in the 12 months to August 2026, across 11 sales, up 50.9% on the 12 months before, HM Land Registry's figures show.

£110,000 typical price, the 12 months to August 2026
£72,892 12 months to August 2025
▲ up 50.9% on the 12 months before
  • Semi-detached 1 sale, too few to price
  • Terraced 1 sale, too few to price
  • Flat or maisonette £105,000 9 sales

Standard sales of homes at market value at the postcodes that start WS1 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 WS1 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.

WS1 1AAWS1 1ABWS1 1AEWS1 1AFWS1 1AGWS1 1DAWS1 1DBWS1 1DDWS1 1DEWS1 1DFWS1 1DGWS1 1DHWS1 1DPWS1 1DQWS1 1EGWS1 1EJWS1 1ENWS1 1ERWS1 1EUWS1 1EWWS1 1EXWS1 1HPWS1 1HRWS1 1JAWS1 1JGWS1 1JJWS1 1JLWS1 1JQWS1 1JXWS1 1JYWS1 1JZWS1 1LAWS1 1LFWS1 1LGWS1 1LNWS1 1LRWS1 1LWWS1 1LYWS1 1NGWS1 1NJWS1 1NLWS1 1NNWS1 1NPWS1 1NRWS1 1NSWS1 1NTWS1 1NUWS1 1NWWS1 1NXWS1 1PBWS1 1PLWS1 1PNWS1 1PQWS1 1PTWS1 1PYWS1 1QAWS1 1QDWS1 1QFWS1 1QGWS1 1QJWS1 1QLWS1 1QRWS1 1QSWS1 1QUWS1 1QWWS1 1QZWS1 1RAWS1 1RBWS1 1REWS1 1RGWS1 1RHWS1 1RJWS1 1RLWS1 1RRWS1 1RSWS1 1RYWS1 1RZWS1 1SAWS1 1SEWS1 1SLWS1 1SPWS1 1SQWS1 1SRWS1 1SXWS1 1SYWS1 1SZWS1 1THWS1 1TJWS1 1TLWS1 1TNWS1 1TPWS1 1TRWS1 1TSWS1 1TUWS1 1TWWS1 1UGWS1 1UZWS1 1WFWS1 1XAWS1 1XBWS1 1XRWS1 1XSWS1 1XUWS1 1XZWS1 1YAWS1 1YBWS1 1YSWS1 1YT

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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