EC1A postcode district

Postcodes and sectors

165 of the district's 621 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 51.52053, -0.10418, which locates the district, not a building.

Companies registered in EC1A

Companies House lists 3,475 companies with a registered office in EC1A; 2,503 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 EC1A

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

Roads filed under EC1A

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.

• Albion Way
• Aldersgate Street
• Angel Street
• Barley Mow Pas
• Bartholomew
• Bartholomew Close
• Bartholomew Passage
• Braidwood Passage
• Christchurch Passage
• Cloth Court
• Cloth Fair
• Cloth Street
• Cock Lane
• Cross Key Square
• East Passage
• East Poultry Avenue
• Giltspur Street
• Glasshouse Yard
• Grand Avenue
• Greyfriars Passage
• Half Moon Court
• Hayne Street
• Holborn Viaduct
• Hosier Lane
• John Wesley Highwalk
• King Edward Street
• Kinghorn Street
• Lindsey Street
• Little Britain
• Long Lane
• Middlesex Passage
• Middle Street
• Minerva Walk
• Montague Street
• Newbury Street
• Queen Isabella Way
• Rising Sun Court
• Seddon Highwalk
• Smithfield Street
• Snow Hill
• Snow Hill Court
• St Martin's le Grand
• West Poultry Avenue
• West Smithfield
• A40

Check an address in EC1A

Check an address in EC1A

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

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=EC1A" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about EC1A

What does an EC1A postcode tell you?

That the address lies in the EC1A district of the EC (East Central London) postcode area, and the place OS Open Names most often lists first for its postcodes is City of 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 165 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 EC1A

• EC1M0.2 km
• EC1N0.3 km
• EC1R0.6 km
• EC4A0.6 km
• W1A0.7 km
• EC2Y0.7 km
• EC4M0.8 km
• WC1R0.8 km
• EC1V0.8 km
• WC2A0.8 km
• EC1Y0.9 km
• WC1V0.9 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids