A gas connections business built by engineers, for engineers.
Founded in 1999 in the North West and now working nationwide, Castlerock has quietly become one of the UK's most trusted independent connection providers — because we do the work ourselves, and we do it properly.
Safety first
Every job is planned, executed and audited to IGE/GM/6, IGE/UP/2 and a zero-harm standard.
Engineering excellence
In-house design, in-house delivery. No white-labelled subcontracting hidden behind a logo.
Customer first
.Direct phone number.
Our mission
To make new gas connections faster, safer and more transparent for every UK customer — from a first-time homeowner to a national housebuilder.
Health, safety & compliance
Our contractors hold accreditations across quality, environment and safety management, and our operatives are individually accredited under the Gas Industry Registration Scheme (GIRS) for the work they undertake.
- GIRS
- SafeContractor
- CHAS
- Constructionline Gold
- ISO 9001
- ISO 14001
- ISO 45001
- Achilles UVDB
Meet the team
Ready to connect your property to the gas network?
Tell us about your site and we'll come back with a fixed, all-in quotation — no obligation, no jargon.