EC1Y postcode district

Postcodes and sectors

174 of the district's 447 postcodes are live in the ONS Postcode Directory of August 2026. A postcode directory says whether a code is in use, never who is there. The live postcodes centre on 51.52307, -0.09222, which locates the district, not a building.

Companies registered in EC1Y

Companies House lists 1,347 companies with a registered office in EC1Y; 545 of them at addresses shared by 25 or more companies (1 October 2026 snapshot). 25 is the count at which the address lookup reports a company cluster.

Places OS Open Names lists for EC1Y

• Greater London
• London
• Islington
• City and County of the City of London
• City of London

Roads filed under EC1Y

Named roads first, then numbered ones. A road is filed under one district even where it runs through several, so a street missing here may be listed under a neighbouring district — which is why the address lookup never calls a British street absent. Great Britain has no open register of buildings, so a listed road never means a building on it exists.

• Baird Street
• Baltic Street East
• Baltic Street West
• Banner Street
• Beech Street
• Brackley Street
• Breton Highwalk
• Bunhill Row
• Cahill Street
• Chequer Street
• Cherry Tree Walk
• Chiswell Street
• Cowper Street
• Domingo Street
• Dufferin Avenue
• Dufferin Street
• Errol Street
• Featherstone Street
• Fortune Street
• Garrett Street
• Golden Lane
• Lamb's Buildings
• Lamb's Passage
• Mallow Street
• Martha's Buildings
• Memel Court
• Memel Street
• Milton Street
• Old Street
• Old Street Yard
• Oliver's Yard
• Roscoe Street
• Shrewsbury Court
• South Yard
• Sutton Way
• Sycamore Street
• Timber Street
• Whitecross Street
• Withers Place
• B100

Check an address in EC1Y

Check an address in EC1Y

The same road list through the API, from the outward code alone:

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=EC1Y" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about EC1Y

What does an EC1Y postcode tell you?

That the address lies in the EC1Y district of the EC (East Central London) postcode area, and the place OS Open Names most often lists first for its postcodes is London. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 174 live postcodes.

Where the counts come from

• ons-postcode-directory · version 2026-08 · Contains ONS, OS and Royal Mail data © Crown copyright and database right 2026, Open Government Licence v3.0. Northern Ireland postcodes are excluded: their reuse needs a Land & Property Services licence.
• os-open-names · version 2026-11-01 · Contains OS data © Crown copyright and database right 2026, Open Government Licence v3.0.
• uk-companies-house · version 2026-10-01 · Companies House free company data product, Open Government Licence v3.0

What each figure means, and what a district page never says, is set out in Reading a British postcode district page; the glossary defines a postcode district, a postcode area, a postcode directory and a street register.

Data synced on 2026-11-01: the newest version among the datasets listed above.

Districts nearest EC1Y

• EC2Y0.4 km
• EC2A0.5 km
• EC1V0.6 km
• EC2M0.7 km
• EC1M0.7 km
• EC2R0.8 km
• EC2V0.9 km
• EC1A0.9 km
• EC2N0.9 km
• EC4M1.1 km
• EC1R1.1 km
• EC4N1.1 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids