Holywell · CH8
Gas safety certificate in CH8 (Holywell)? We'll point you the right way.
Covering Holywell, Milwr, Holway, Carmel, Lloc, Bryn Celyn, Greenfield, Halkyn, Lixwm, Talacre, including Bagillt, Brynford and Halkyn, Caerwys. Find Gas Safe registered engineers nearby.
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CH8 (Holywell) in a nutshell
CH8 covers Holywell, Milwr, Holway, Carmel, Lloc, Bryn Celyn, Greenfield, Halkyn, Lixwm, Talacre, in Denbighshire and Flintshire. Give your full postcode when you ask for quotes, so the pro can confirm they cover your street.
Local tips for CH8
Two councils in one district
CH8 is split between Denbighshire and Flintshire. 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
CH8 stretches across Bagillt, Brynford and Halkyn, Caerwys and more, so give your full postcode, not just 'CH8', when you ask for quotes.
Where's this from?
postcodes.io (ONSPD) wardsMostly mains gas round here
Most homes in Holywell run on mains gas, so a standard boiler-and-hob check is what most people need.
Where's this from?
ONS Census 2021, Holywell: 81.7% mains gas onlyWales landlord rules: quick version
- Every year: a gas safety check by a Gas Safe registered engineer.
- CO alarm: needed where there's a gas, oil or solid fuel appliance.
- Register: with Rent Smart Wales.
More detail on the Holywell page. Always double-check on GOV.WALES.
Next door to CH8
Frequently asked questions
Which areas does CH8 cover?
CH8 (Holywell, Milwr, Holway, Carmel, Lloc, Bryn Celyn, Greenfield, Halkyn, Lixwm, Talacre) includes the wards of Bagillt, Brynford and Halkyn, Caerwys, Flint: Coleshill and Trelawny, Greenfield, Holywell Central, Holywell East, Holywell West, Llanasa and Trelawnyd, Mostyn, Tremeirchion, Whitford (ONS Postcode Directory via postcodes.io).
Which postcode districts are next to CH8?
Neighbouring districts include CH6 (Flint), CH48 (Caldy), CH47 (Hoylake) (ONS Postcode Directory via Doogal). A pro covering CH8 may well cover these too, so it's worth asking.
How many homes are in CH8?
About 8,639 households and 20,493 residents at the 2011 Census, across 680 active postcodes (Doogal / ONS Postcode Directory).
Which council area is CH8 in?
CH8 sits in Denbighshire, Flintshire (postcodes.io). Parliamentary constituency: Alyn and Deeside, Clwyd East.
📊 The numbers behind this page
- Postcode district
- CH8 1
- Areas covered
- Holywell, Milwr, Holway, Carmel, Lloc, Bryn Celyn, Greenfield, Halkyn, Lixwm, Talacre 2
- Active postcodes
- 680 3
- Households (2011 Census, via Doogal)
- 8,639 2
- Population (2011 Census, via Doogal)
- 20,493 2
- Electoral wards
- Bagillt, Brynford and Halkyn, Caerwys, Flint: Coleshill and Trelawny, Greenfield, Holywell Central, Holywell East, Holywell West … 4
- Parliamentary constituencies
- Alyn and Deeside, Clwyd East 4
- Local authority
- Denbighshire, Flintshire 4
- Households heated by mains gas only (Holywell built-up area)
- 81.7% 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.