Colchester · CO6
Gas safety certificate in CO6 (Colchester)? We'll point you the right way.
Covering Colchester, including Assington, Brett Vale, Bures St Mary & Nayland. Find Gas Safe registered engineers nearby.
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Request a gas safety certificate in CO6 (Colchester)
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Request a gas safety certificate in CO6 (Colchester)
How to check a gas safety engineer is registered: see the Colchester page.
CO6 (Colchester) in a nutshell
CO6 covers Colchester, in Babergh and Braintree and Colchester. Give your full postcode when you ask for quotes, so the pro can confirm they cover your street.
Local tips for CO6
Two councils in one district
CO6 is split between Babergh and Braintree and Colchester. Some councils run their own landlord licensing, so check which one your home is in.
Where's this from?
postcodes.io (ONSPD) local authorityGive your full postcode
CO6 stretches across Assington, Brett Vale, Bures St Mary & Nayland and more, so give your full postcode, not just 'CO6', when you ask for quotes.
Where's this from?
postcodes.io (ONSPD) wardsMostly mains gas round here
Most homes in Colchester run on mains gas, so a standard boiler-and-hob check is what most people need.
Where's this from?
ONS Census 2021, Colchester: 74.0% mains gas onlyEngland landlord rules: quick version
- Every year: a check by a Gas Safe registered engineer.
- Within 28 days: give your tenants a copy (new tenants get it before they move in).
- Keep it: hang on to records for at least 2 years.
More detail on the Colchester page. Always double-check on GOV.UK.
Next door to CO6
Frequently asked questions
Which areas does CO6 cover?
CO6 (Colchester) includes the wards of Assington, Brett Vale, Bures St Mary & Nayland, Castle, Coggeshall, Gosfield & Greenstead Green, Lexden and Braiswick, Marks Tey and Layer, Rural North, The Colnes (ONS Postcode Directory via postcodes.io).
Which postcode districts are next to CO6?
Neighbouring districts include CO8 (Bures), CO3 (Colchester), CO1 (Colchester), CO5 (Colchester), CO4 (Colchester) (ONS Postcode Directory via Doogal). A pro covering CO6 may well cover these too, so it's worth asking.
How many homes are in CO6?
About 11,706 households and 28,541 residents at the 2011 Census, across 1,029 active postcodes (Doogal / ONS Postcode Directory).
Which council area is CO6 in?
CO6 sits in Babergh, Braintree, Colchester (postcodes.io). Parliamentary constituency: Braintree, Colchester, Harwich and North Essex, South Suffolk, Witham.
📊 The numbers behind this page
- Postcode district
- CO6 1
- Areas covered
- Colchester 2
- Active postcodes
- 1,029 3
- Households (2011 Census, via Doogal)
- 11,706 2
- Population (2011 Census, via Doogal)
- 28,541 2
- Electoral wards
- Assington, Brett Vale, Bures St Mary & Nayland, Castle, Coggeshall, Gosfield & Greenstead Green, Lexden and Braiswick, Marks Tey and Layer … 4
- Parliamentary constituencies
- Braintree, Colchester, Harwich and North Essex, South Suffolk, Witham 4
- Local authority
- Babergh, Braintree, Colchester 4
- Households heated by mains gas only (Colchester built-up area)
- 74.0% 5
- ONS Postcode Directory
- Doogal
- Doogal / ONSPD
- postcodes.io
- ONS Census 2021
Made with open data. See where it all comes from. Updated 26 October 2026.