CM5 postcode district

Postcodes and sectors

449 of the district's 619 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 51.72223, 0.24829, which locates the district, not a building.

Companies registered in CM5

Companies House lists 1,372 companies with a registered office in CM5; 417 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 CM5

• Essex
• Eastern
• Epping Forest
• Chipping Ongar
• Shelley
• Moreton
• Fyfield
• High Ongar
• Clatterford End
• Toot Hill
• Beauchamp Roding
• Willingale
• Bobbingworth
• Abbess Roding
• Magdalen Laver
• Brentwood
• Greensted Green
• Stanford Rivers
• Pedlars End
• Berners Roding
• Little End
• Little Laver
• Bovinger
• Cannon's Green

Roads filed under CM5

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.

• Abbey Close
• Acres Avenue
• Anchor Lane
• Ashlyns Lane
• Aukingford Gardens
• Aukingford Green
• Back Lane
• Banson's Lane
• Bansons Mews
• Bansons Way
• Bansons Yard
• Barker Way
• Barron's Close
• Bassett's Lane
• Battle Court
• Beech Road
• Berwick Lane
• Betjeman Way
• Bewlay Close
• Birds Green
• Blake Hall Road
• Bobbingworth Mill
• Bowes Drive
• Brentwood Road
• Bridge Road
• Brookfields
• Bushy Lea
• Cannons Lane
• Carters Yard
• Castle Street
• Chelmsford Road
• Churchill Close
• Church Lane
• Church Road
• Clare Mews
• Cloverley Road
• Coles Close
• Cooper Mews
• Coopers Hill
• Corn Barn Close
• Cripsey Avenue
• Cumley Road
• Dacres Gate
• Drapers Corner
• Dukes Lane
• Dunmow Road
• Elstar Road
• Epping Road
• Fairbank Close
• Fairfield Road
• Field View
• Forest Drive
• Frayes Chase
• Fyfield Grange
• Fyfield Road
• Gainsthorpe Road
• Garden Fields
• Glebe Road
• Gould Close
• Great Lawn

Check an address in CM5

Check an address in CM5

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

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=CM5" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about CM5

What does a CM5 postcode tell you?

That the address lies in the CM5 district of the CM (Chelmsford) postcode area, and the place OS Open Names most often lists first for its postcodes is Epping Forest. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 449 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 CM5

• CM179.1 km
• CM169.1 km
• CM159.4 km
• CM1810.5 km
• RM410.9 km
• CM411.0 km
• CM2011.6 km
• CM1411.9 km
• CM2112.3 km
• CM1912.9 km
• CM1313.4 km
• RM313.5 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids