W1B 4 postcode sector in the W1B district

W1B 4 is a sector of the W1B district: every postcode that starts W1B 4. It has 65 postcodes in use, one of them a large-user postcode. 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 W1B 4 sector, and which are new since 2020

Map of every postcode in the W1B 4 sector, by new since 2020 Of the 65 postcodes in the W1B 4 sector that ONS places, 2 are new since 2020 and 63 were in use before 2020. Places named: West End. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. W1B 4AB: before 2020W1B 4AD: before 2020W1B 4AZ: before 2020W1B 4BD: before 2020W1B 4BF: before 2020W1B 4BH: before 2020W1B 4BL: before 2020W1B 4BN: before 2020W1B 4BP: before 2020W1B 4BQ: before 2020W1B 4BS: before 2020W1B 4BT: before 2020W1B 4BX: before 2020W1B 4BY: before 2020W1B 4DA: before 2020W1B 4DE: before 2020W1B 4DG: before 2020W1B 4DH: before 2020W1B 4DJ: before 2020W1B 4DN: before 2020W1B 4DW: before 2020W1B 4DY: before 2020W1B 4DZ: before 2020W1B 4ED: before 2020W1B 4EE: before 2020W1B 4EF: before 2020W1B 4EN: before 2020W1B 4ES: before 2020W1B 4EZ: before 2020W1B 4HL: before 2020W1B 4HP: before 2020W1B 4HS: before 2020W1B 4HT: before 2020W1B 4HX: before 2020W1B 4HY: before 2020W1B 4HZ: before 2020W1B 4JA: before 2020W1B 4JD: before 2020W1B 4JP: before 2020W1B 4JR: before 2020W1B 4LY: before 2020W1B 4NA: before 2020W1B 4NB: before 2020W1B 4NF: before 2020W1B 4NG: before 2020W1B 4NH: before 2020W1B 4NJ: before 2020W1B 4NR: before 2020W1B 4HB: new since 2020W1B 4JG: new since 2020 West End Map of every postcode in the W1B 4 sector, by new since 2020 Of the 65 postcodes in the W1B 4 sector that ONS places, 2 are new since 2020 and 63 were in use before 2020. Places named: West End. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. West End
  • New since 2020: 2
  • In use before 2020: 63

Of the 65 postcodes in the W1B 4 sector that ONS places, 2 are new since 2020 and 63 were in use before 2020.

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. New since 2020 means it came into use in January 2020 or later. 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; when each came into use: the same directory; 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 2 newest postcodes

W1B 4HBMarch 2026W1B 4JGJanuary 2023

Postcodes in W1B 4

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.

W1B 4ABW1B 4ADW1B 4AZW1B 4BDW1B 4BFW1B 4BGW1B 4BHW1B 4BLW1B 4BNW1B 4BPW1B 4BQW1B 4BRW1B 4BSW1B 4BTW1B 4BUW1B 4BXW1B 4BYW1B 4BZW1B 4DAW1B 4DEW1B 4DFW1B 4DGW1B 4DHW1B 4DJW1B 4DNW1B 4DQW1B 4DWW1B 4DYW1B 4DZW1B 4EAW1B 4EBW1B 4EDW1B 4EEW1B 4EFW1B 4EGW1B 4ENW1B 4ESW1B 4EZW1B 4HBW1B 4HLW1B 4HPW1B 4HSW1B 4HTW1B 4HWW1B 4HXW1B 4HYW1B 4HZW1B 4JAW1B 4JDW1B 4JGW1B 4JPW1B 4JRW1B 4LYW1B 4LZW1B 4NAW1B 4NBW1B 4NDW1B 4NEW1B 4NFW1B 4NGW1B 4NHW1B 4NJW1B 4NQW1B 4NRW1B 4RS

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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