W1S 1 postcode sector in the W1S district

W1S 1 is a sector of the W1S district: every postcode that starts W1S 1. It has 145 postcodes in use, 2 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 W1S 1 sector, by flood risk

Map of every postcode in the W1S 1 sector, by flood risk Of the 145 postcodes in the W1S 1 sector that ONS places, 145 are not on the Environment Agency's at-risk list. Places named: City of Westminster. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A40A4201 W1S 1AA: not on the flood risk listW1S 1AD: not on the flood risk listW1S 1AE: not on the flood risk listW1S 1AF: not on the flood risk listW1S 1AG: not on the flood risk listW1S 1AH: not on the flood risk listW1S 1AJ: not on the flood risk listW1S 1AQ: not on the flood risk listW1S 1AR: not on the flood risk listW1S 1AW: not on the flood risk listW1S 1AY: not on the flood risk listW1S 1BB: not on the flood risk listW1S 1BE: not on the flood risk listW1S 1BG: not on the flood risk listW1S 1BJ: not on the flood risk listW1S 1BL: not on the flood risk listW1S 1BN: not on the flood risk listW1S 1BP: not on the flood risk listW1S 1BQ: not on the flood risk listW1S 1BR: not on the flood risk listW1S 1BU: not on the flood risk listW1S 1BX: not on the flood risk listW1S 1BZ: not on the flood risk listW1S 1DA: not on the flood risk listW1S 1DB: not on the flood risk listW1S 1DG: not on the flood risk listW1S 1DJ: not on the flood risk listW1S 1DL: not on the flood risk listW1S 1DN: not on the flood risk listW1S 1DP: not on the flood risk listW1S 1DQ: not on the flood risk listW1S 1DS: not on the flood risk listW1S 1DX: not on the flood risk listW1S 1DY: not on the flood risk listW1S 1DZ: not on the flood risk listW1S 1EA: not on the flood risk listW1S 1EB: not on the flood risk listW1S 1ED: not on the flood risk listW1S 1EX: not on the flood risk listW1S 1EY: not on the flood risk listW1S 1EZ: not on the flood risk listW1S 1FD: not on the flood risk listW1S 1FE: not on the flood risk listW1S 1FH: not on the flood risk listW1S 1FJ: not on the flood risk listW1S 1FS: not on the flood risk listW1S 1FX: not on the flood risk listW1S 1HA: not on the flood risk listW1S 1HD: not on the flood risk listW1S 1HE: not on the flood risk listW1S 1HL: not on the flood risk listW1S 1HQ: not on the flood risk listW1S 1HT: not on the flood risk listW1S 1HY: not on the flood risk listW1S 1JB: not on the flood risk listW1S 1JD: not on the flood risk listW1S 1JF: not on the flood risk listW1S 1JJ: not on the flood risk listW1S 1JL: not on the flood risk listW1S 1JW: not on the flood risk listW1S 1JY: not on the flood risk listW1S 1LA: not on the flood risk listW1S 1LD: not on the flood risk listW1S 1LG: not on the flood risk listW1S 1LH: not on the flood risk listW1S 1LL: not on the flood risk listW1S 1LQ: not on the flood risk listW1S 1NA: not on the flood risk listW1S 1NE: not on the flood risk listW1S 1NG: not on the flood risk listW1S 1NH: not on the flood risk listW1S 1NJ: not on the flood risk listW1S 1NR: not on the flood risk listW1S 1NX: not on the flood risk listW1S 1NY: not on the flood risk listW1S 1PD: not on the flood risk listW1S 1PF: not on the flood risk listW1S 1PH: not on the flood risk listW1S 1PN: not on the flood risk listW1S 1PP: not on the flood risk listW1S 1PQ: not on the flood risk listW1S 1PR: not on the flood risk listW1S 1PS: not on the flood risk listW1S 1PU: not on the flood risk listW1S 1QL: not on the flood risk listW1S 1QP: not on the flood risk listW1S 1RQ: not on the flood risk listW1S 1RR: not on the flood risk listW1S 1RS: not on the flood risk listW1S 1RT: not on the flood risk listW1S 1RU: not on the flood risk listW1S 1RX: not on the flood risk listW1S 1RY: not on the flood risk listW1S 1SA: not on the flood risk listW1S 1SB: not on the flood risk listW1S 1SH: not on the flood risk listW1S 1SJ: not on the flood risk listW1S 1SL: not on the flood risk listW1S 1SN: not on the flood risk listW1S 1SP: not on the flood risk listW1S 1SS: not on the flood risk listW1S 1ST: not on the flood risk listW1S 1SU: not on the flood risk listW1S 1TA: not on the flood risk listW1S 1TD: not on the flood risk listW1S 1TE: not on the flood risk listW1S 1YA: not on the flood risk listW1S 1YD: not on the flood risk listW1S 1YH: not on the flood risk listW1S 1YJ: not on the flood risk listW1S 1YL: not on the flood risk listW1S 1YN: not on the flood risk listW1S 1YQ: not on the flood risk listW1S 1YR: not on the flood risk listW1S 1YU: not on the flood risk listW1S 1YZ: not on the flood risk list City of Westminster Map of every postcode in the W1S 1 sector, by flood risk Of the 145 postcodes in the W1S 1 sector that ONS places, 145 are not on the Environment Agency's at-risk list. Places named: West End. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. West End
  • A home or business at high risk: 0
  • At medium risk at worst: 0
  • At low risk at worst: 0
  • At very low risk only: 0
  • Not on the at-risk list: 145

Of the 145 postcodes in the W1S 1 sector that ONS places, 145 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

What do homes sell for in W1S 1?

HM Land Registry records 4 sales of homes in W1S 1 in the 12 months to August 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 W1S 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 W1S 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.

W1S 1AAW1S 1ADW1S 1AEW1S 1AFW1S 1AGW1S 1AHW1S 1AJW1S 1ALW1S 1ANW1S 1AQW1S 1ARW1S 1AWW1S 1AYW1S 1BBW1S 1BEW1S 1BGW1S 1BJW1S 1BLW1S 1BNW1S 1BPW1S 1BQW1S 1BRW1S 1BUW1S 1BXW1S 1BYW1S 1BZW1S 1DAW1S 1DBW1S 1DGW1S 1DJW1S 1DLW1S 1DNW1S 1DPW1S 1DQW1S 1DSW1S 1DTW1S 1DXW1S 1DYW1S 1DZW1S 1EAW1S 1EBW1S 1EDW1S 1EFW1S 1EGW1S 1EJW1S 1EPW1S 1EXW1S 1EYW1S 1EZW1S 1FDW1S 1FEW1S 1FHW1S 1FJW1S 1FSW1S 1FWW1S 1FXW1S 1HAW1S 1HDW1S 1HEW1S 1HLW1S 1HNW1S 1HQW1S 1HSW1S 1HTW1S 1HUW1S 1HYW1S 1JBW1S 1JDW1S 1JFW1S 1JHW1S 1JJW1S 1JLW1S 1JPW1S 1JWW1S 1JYW1S 1LAW1S 1LBW1S 1LDW1S 1LEW1S 1LGW1S 1LHW1S 1LJW1S 1LLW1S 1LQW1S 1NAW1S 1NDW1S 1NEW1S 1NGW1S 1NHW1S 1NJW1S 1NRW1S 1NXW1S 1NYW1S 1PDW1S 1PFW1S 1PGW1S 1PHW1S 1PLW1S 1PNW1S 1PPW1S 1PQW1S 1PRW1S 1PSW1S 1PUW1S 1PWW1S 1PYW1S 1QHW1S 1QLW1S 1QPW1S 1RQW1S 1RRW1S 1RSW1S 1RTW1S 1RUW1S 1RXW1S 1RYW1S 1RZW1S 1SAW1S 1SBW1S 1SHW1S 1SJW1S 1SLW1S 1SNW1S 1SPW1S 1SQW1S 1SRW1S 1SSW1S 1STW1S 1SUW1S 1SWW1S 1SXW1S 1TAW1S 1TDW1S 1TEW1S 1YAW1S 1YDW1S 1YHW1S 1YJW1S 1YLW1S 1YNW1S 1YQW1S 1YRW1S 1YSW1S 1YUW1S 1YZ

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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