Didcot · OX11

Gas safety certificate in OX11 (Didcot)? We'll point you the right way.

Covering Didcot, Blewbury, Harwell, including Blewbury & Harwell, Cholsey, Didcot North East. Find Gas Safe registered engineers nearby.

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Request a gas safety certificate in OX11 (Didcot)

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Request a gas safety certificate in OX11 (Didcot)

How to check a gas safety engineer is registered: see the Didcot page.

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OX11 (Didcot) in a nutshell

OX11 covers Didcot, Blewbury, Harwell, in South Oxfordshire and Vale of White Horse. Give your full postcode when you ask for quotes, so the pro can confirm they cover your street.

Local tips for OX11

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Two councils in one district

OX11 is split between South Oxfordshire and Vale of White Horse. Some councils run their own landlord licensing, so check which one your home is in.

Where's this from?postcodes.io (ONSPD) local authority
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Give your full postcode

OX11 stretches across Blewbury & Harwell, Cholsey, Didcot North East and more, so give your full postcode, not just 'OX11', when you ask for quotes.

Where's this from?postcodes.io (ONSPD) wards
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Mostly mains gas round here

Most homes in Didcot run on mains gas, so a standard boiler-and-hob check is what most people need.

Where's this from?ONS Census 2021, Didcot: 79.7% mains gas only
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New to gas safety certificates? Here's what to expect, how to get ready and what it costs, in plain English. Read the quick guide →

England 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 Didcot page. Always double-check on GOV.UK.

Next door to OX11

OX14 · AbingdonOX10 · WallingfordOX1 · Central and South OxfordOX4 · East OxfordRG18 · Hampstead NorreysOX13 · Longworth

← Gas safety (CP12) across Didcot · all areas

Frequently asked questions

Which areas does OX11 cover?

OX11 (Didcot, Blewbury, Harwell) includes the wards of Blewbury & Harwell, Cholsey, Didcot North East, Didcot South, Didcot West, Hendreds, Sandford & the Wittenhams, Sutton Courtenay (ONS Postcode Directory via postcodes.io).

Which postcode districts are next to OX11?

Neighbouring districts include OX14 (Abingdon), OX10 (Wallingford), OX1 (Central and South Oxford), OX4 (East Oxford), RG18 (Hampstead Norreys) (ONS Postcode Directory via Doogal). A pro covering OX11 may well cover these too, so it's worth asking.

How many homes are in OX11?

About 13,482 households and 33,280 residents at the 2011 Census, across 1,184 active postcodes (Doogal / ONS Postcode Directory).

Which council area is OX11 in?

OX11 sits in South Oxfordshire, Vale of White Horse (postcodes.io). Parliamentary constituency: Didcot and Wantage.

📊 The numbers behind this page
Postcode district
OX11 1
Areas covered
Didcot, Blewbury, Harwell 2
Active postcodes
1,184 3
Households (2011 Census, via Doogal)
13,482 2
Population (2011 Census, via Doogal)
33,280 2
Electoral wards
Blewbury & Harwell, Cholsey, Didcot North East, Didcot South, Didcot West, Hendreds, Sandford & the Wittenhams, Sutton Courtenay 4
Parliamentary constituencies
Didcot and Wantage 4
Local authority
South Oxfordshire, Vale of White Horse 4
Households heated by mains gas only (Didcot built-up area)
79.7% 5
  1. ONS Postcode Directory
  2. Doogal
  3. Doogal / ONSPD
  4. postcodes.io
  5. ONS Census 2021

Made with open data. See where it all comes from. Updated 26 October 2026.