W1B postcode district: City of Westminster and around

W1B is a postcode district in England, with 297 postcodes in use in 5 sectors. It has postcodes in City of Westminster. Its council is Westminster.

Postcodes in use
297
Sectors
5
Council
Westminster
Places
City of Westminster

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026. See all our data sources

Every postcode in W1B, by flood risk

Map of every postcode in W1B, by flood risk Of the 297 postcodes in W1B that ONS places, 297 are not on the Environment Agency's at-risk list. Places named: West End, Marylebone. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A400A40 W1B 1AA: not on the flood risk listW1B 1AD: not on the flood risk listW1B 1AE: not on the flood risk listW1B 1AR: not on the flood risk listW1B 1AS: not on the flood risk listW1B 1DJ: not on the flood risk listW1B 1DY: not on the flood risk listW1B 1HR: not on the flood risk listW1B 1JA: not on the flood risk listW1B 1JH: not on the flood risk listW1B 1JL: not on the flood risk listW1B 1LS: not on the flood risk listW1B 1LT: not on the flood risk listW1B 1LU: not on the flood risk listW1B 1LX: not on the flood risk listW1B 1LY: not on the flood risk listW1B 1LZ: not on the flood risk listW1B 1NA: not on the flood risk listW1B 1NB: not on the flood risk listW1B 1NE: not on the flood risk listW1B 1NG: not on the flood risk listW1B 1NJ: not on the flood risk listW1B 1NL: not on the flood risk listW1B 1NN: not on the flood risk listW1B 1NP: not on the flood risk listW1B 1NQ: not on the flood risk listW1B 1NS: not on the flood risk listW1B 1NT: not on the flood risk listW1B 1NU: not on the flood risk listW1B 1NX: not on the flood risk listW1B 1NZ: not on the flood risk listW1B 1PF: not on the flood risk listW1B 1PG: not on the flood risk listW1B 1PN: not on the flood risk listW1B 1PR: not on the flood risk listW1B 1PT: not on the flood risk listW1B 1PU: not on the flood risk listW1B 1PW: not on the flood risk listW1B 1PX: not on the flood risk listW1B 1PY: not on the flood risk listW1B 1PZ: not on the flood risk listW1B 1QA: not on the flood risk listW1B 1QB: not on the flood risk listW1B 1QD: not on the flood risk listW1B 1QE: not on the flood risk listW1B 1QG: not on the flood risk listW1B 1QH: not on the flood risk listW1B 1QJ: not on the flood risk listW1B 1QP: not on the flood risk listW1B 1QQ: not on the flood risk listW1B 1QR: not on the flood risk listW1B 1QS: not on the flood risk listW1B 1QT: not on the flood risk listW1B 1QU: not on the flood risk listW1B 1QW: not on the flood risk listW1B 1QX: not on the flood risk listW1B 1QY: not on the flood risk listW1B 2AE: not on the flood risk listW1B 2AF: not on the flood risk listW1B 2AG: not on the flood risk listW1B 2AY: not on the flood risk listW1B 2EB: not on the flood risk listW1B 2ED: not on the flood risk listW1B 2EF: not on the flood risk listW1B 2EG: not on the flood risk listW1B 2EL: not on the flood risk listW1B 2EN: not on the flood risk listW1B 2EP: not on the flood risk listW1B 2ER: not on the flood risk listW1B 2ES: not on the flood risk listW1B 2EZ: not on the flood risk listW1B 2HA: not on the flood risk listW1B 2HH: not on the flood risk listW1B 2HJ: not on the flood risk listW1B 2HP: not on the flood risk listW1B 2HW: not on the flood risk listW1B 2LD: not on the flood risk listW1B 2LF: not on the flood risk listW1B 2LG: not on the flood risk listW1B 2LH: not on the flood risk listW1B 2LJ: not on the flood risk listW1B 2LQ: not on the flood risk listW1B 2LR: not on the flood risk listW1B 2LU: not on the flood risk listW1B 2LW: not on the flood risk listW1B 2LZ: not on the flood risk listW1B 2QS: not on the flood risk listW1B 3AA: not on the flood risk listW1B 3AF: not on the flood risk listW1B 3AG: not on the flood risk listW1B 3AH: not on the flood risk listW1B 3AP: not on the flood risk listW1B 3AQ: not on the flood risk listW1B 3AS: not on the flood risk listW1B 3AU: not on the flood risk listW1B 3BJ: not on the flood risk listW1B 3BL: not on the flood risk listW1B 3BN: not on the flood risk listW1B 3BR: not on the flood risk listW1B 3DA: not on the flood risk listW1B 3DB: not on the flood risk listW1B 3DE: not on the flood risk listW1B 3DG: not on the flood risk listW1B 4AB: not on the flood risk listW1B 4AD: not on the flood risk listW1B 4AZ: not on the flood risk listW1B 4BD: not on the flood risk listW1B 4BH: not on the flood risk listW1B 4BL: not on the flood risk listW1B 4BN: not on the flood risk listW1B 4BP: not on the flood risk listW1B 4BQ: not on the flood risk listW1B 4BR: not on the flood risk listW1B 4BS: not on the flood risk listW1B 4BT: not on the flood risk listW1B 4BX: not on the flood risk listW1B 4BY: not on the flood risk listW1B 4DA: not on the flood risk listW1B 4DE: not on the flood risk listW1B 4DG: not on the flood risk listW1B 4DH: not on the flood risk listW1B 4DJ: not on the flood risk listW1B 4DN: not on the flood risk listW1B 4DW: not on the flood risk listW1B 4DY: not on the flood risk listW1B 4DZ: not on the flood risk listW1B 4ED: not on the flood risk listW1B 4EE: not on the flood risk listW1B 4EF: not on the flood risk listW1B 4EN: not on the flood risk listW1B 4EZ: not on the flood risk listW1B 4HB: not on the flood risk listW1B 4HL: not on the flood risk listW1B 4HP: not on the flood risk listW1B 4HT: not on the flood risk listW1B 4HW: not on the flood risk listW1B 4HX: not on the flood risk listW1B 4HY: not on the flood risk listW1B 4JA: not on the flood risk listW1B 4JD: not on the flood risk listW1B 4JG: not on the flood risk listW1B 4JP: not on the flood risk listW1B 4JR: not on the flood risk listW1B 4LY: not on the flood risk listW1B 4NA: not on the flood risk listW1B 4NB: not on the flood risk listW1B 4ND: not on the flood risk listW1B 4NF: not on the flood risk listW1B 4NH: not on the flood risk listW1B 4NJ: not on the flood risk listW1B 4NR: not on the flood risk listW1B 5AB: not on the flood risk listW1B 5AD: not on the flood risk listW1B 5AF: not on the flood risk listW1B 5AH: not on the flood risk listW1B 5AN: not on the flood risk listW1B 5AP: not on the flood risk listW1B 5AS: not on the flood risk listW1B 5AW: not on the flood risk listW1B 5BD: not on the flood risk listW1B 5BT: not on the flood risk listW1B 5DF: not on the flood risk listW1B 5DG: not on the flood risk listW1B 5DH: not on the flood risk listW1B 5DL: not on the flood risk listW1B 5DP: not on the flood risk listW1B 5DQ: not on the flood risk listW1B 5DR: not on the flood risk listW1B 5DS: not on the flood risk listW1B 5DW: not on the flood risk listW1B 5EA: not on the flood risk listW1B 5FE: not on the flood risk listW1B 5HB: not on the flood risk listW1B 5LR: not on the flood risk listW1B 5LU: not on the flood risk listW1B 5LY: not on the flood risk listW1B 5LZ: not on the flood risk listW1B 5NE: not on the flood risk listW1B 5NH: not on the flood risk listW1B 5NL: not on the flood risk listW1B 5PA: not on the flood risk listW1B 5PD: not on the flood risk listW1B 5PE: not on the flood risk listW1B 5PF: not on the flood risk listW1B 5PG: not on the flood risk listW1B 5PH: not on the flood risk listW1B 5PL: not on the flood risk listW1B 5PR: not on the flood risk listW1B 5PS: not on the flood risk listW1B 5PW: not on the flood risk listW1B 5PX: not on the flood risk listW1B 5PY: not on the flood risk listW1B 5PZ: not on the flood risk listW1B 5QB: not on the flood risk listW1B 5QD: not on the flood risk listW1B 5QE: not on the flood risk listW1B 5QG: not on the flood risk listW1B 5QH: not on the flood risk listW1B 5QN: not on the flood risk listW1B 5QP: not on the flood risk listW1B 5QQ: not on the flood risk listW1B 5QR: not on the flood risk listW1B 5RA: not on the flood risk listW1B 5RL: not on the flood risk listW1B 5RS: not on the flood risk listW1B 5RT: not on the flood risk listW1B 5RU: not on the flood risk listW1B 5RW: not on the flood risk listW1B 5RZ: not on the flood risk listW1B 5SB: not on the flood risk listW1B 5SD: not on the flood risk listW1B 5SE: not on the flood risk listW1B 5SF: not on the flood risk listW1B 5SG: not on the flood risk listW1B 5SJ: not on the flood risk listW1B 5SN: not on the flood risk listW1B 5SQ: not on the flood risk listW1B 5TH: not on the flood risk listW1B 5TJ: not on the flood risk listW1B 5TL: not on the flood risk listW1B 5TP: not on the flood risk listW1B 5TQ: not on the flood risk list West EndMarylebone Map of every postcode in W1B, by flood risk Of the 297 postcodes in W1B that ONS places, 297 are not on the Environment Agency's at-risk list. Places named: West End, Marylebone. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. West EndMarylebone
  • 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: 297

Of the 297 postcodes in W1B that ONS places, 297 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.

The middle of its postcodes: latitude 51.5144, longitude -0.1409. Open this area on OpenStreetMap

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 broadband can you get in W1B?

Ofcom reports on 268 of the 297 postcodes in W1B. At 229 of them every home and business can get gigabit broadband.

Postcodes where every home can get gigabit229 of 268
Postcodes where every home can get superfast235 of 268

Ofcom gives each postcode's share of homes and businesses, not how many there are, so these count postcodes. Each postcode page has its own figures. A provider's checker answers for one address.

Check one address on Ofcom's checker

Source: Ofcom, Connected Nations, Spring 2026, data for January 2026, Open Government Licence v3.0. How we use it

Is W1B at risk of flooding?

None of the 297 postcodes in W1B is on the Environment Agency's list of postcodes with a home or business in an area at risk of flooding from rivers or the sea.

Homes and businesses in an area at risk of flooding from rivers or the sea, as the Environment Agency counts them, added up over the postcodes. It is for the land, not each building, and leaves out surface water, groundwater and sewers. Each postcode page has its own figures and its flood warning areas.

Source: Environment Agency, Risk of Flooding from Rivers and Sea (postcodes in areas at risk), published 6 July 2026, Open Government Licence v3.0. How we use it

What do homes sell for in W1B?

HM Land Registry records 3 sales of homes in W1B in the 12 months to August 2026: too few to give a typical price.

  • Flat or maisonette 3 sales, too few to price

Standard sales of homes at market value. A typical price is the median, the middle sale. Sales take weeks to be registered, so the last month or two are incomplete. Each postcode page gives the figure for its own postcode sector.

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 W1B

Pick a sector, then a postcode. A sector is the district plus the next digit.

W1B 165 postcodesW1B 249 postcodesW1B 318 postcodesW1B 465 postcodesW1B 5100 postcodes
UK postcode format explained

Places in W1B

Towns and villages with postcodes in W1B, and how many each has here.

City of Westminster postcodes,297

Who covers W1B

How many of the district's postcodes in use fall under each council, constituency and police force area.

Councils

What council am I in?

Constituencies

  • Cities of London and Westminster297

Police force areas

  • Metropolitan Police297

Next to W1B

W1A postcode district W1C postcode district All W districts City of Westminster postcodes

"Next to" is by number: the districts before and after W1B in the W area.

Check a postcode

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