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UK Accreditation · Verified Body
Gas Safe Register (Gas Safe)
The legal register every UK gas engineer must be on. Last reviewed April 2026 by the TradeMatch editorial team.
What is Gas Safe?
Gas Safe Register is the official list of engineers legally allowed to work on gas appliances in the UK, the Isle of Man and Guernsey. It replaced CORGI in April 2009 and operates under contract from the Health and Safety Executive (HSE). Hiring an unregistered engineer for any gas work — boiler, hob, oven, fire — is illegal under the Gas Safety (Installation and Use) Regulations 1998. The penalties land on the engineer, but the homeowner carries the safety risk: incorrectly installed gas equipment is the leading cause of UK carbon-monoxide fatalities tied to home appliances.
Visit Official Register ↗
Scope of Certification
What does Gas Safe cover?
Gas Safe registration covers natural gas, LPG and CO checks. Each registered engineer carries a photo ID card listing the specific gas categories they are competent in — a domestic boiler installer is not automatically certified for commercial catering equipment, for instance. Always check the back of the card. Registration must be renewed annually and engineers can be removed from the register for unsafe work. Gas Safe does not cover oil heating (that is OFTEC) or solid fuel (HETAS).
Three Things That Matter
Verifying a Gas Safe-registered tradesperson
- Photo ID card with a Gas Safe licence number — verify it on gassaferegister.co.uk before any work begins
- The categories on the back of the card match your job — a "domestic" engineer cannot legally do "commercial"
- Gas Safety Certificate (CP12 for landlords, equivalent issued for homeowners) supplied within 7 days of completion
UK Trades Covered
Gas Safe applies to these trades
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Answers
Gas Safe FAQ
Is it illegal to do my own gas work?
Yes for any gas-carrying connection or appliance commissioning. You may legally turn appliances on/off and clean them, but anything connecting, disconnecting or modifying gas pipework requires a Gas Safe registered engineer.
How do I check if a gas engineer is registered?
Visit gassaferegister.co.uk and enter the licence number from their photo ID card. The register confirms the engineer is in date and shows the gas categories they are certified in. Always check before work starts, not after.
What's the difference between Gas Safe and CORGI?
Gas Safe replaced CORGI in 2009 as the legally-required UK gas register. CORGI now operates as a voluntary trade association for additional standards but is no longer the legal scheme. Only Gas Safe registration is legally valid for UK gas work.
Does Gas Safe cover oil boilers?
No. Oil-fired heating equipment falls under OFTEC. Solid fuel and biomass appliances fall under HETAS. Gas Safe is for natural gas and LPG only.
The Honest Read
Why Gas Safe verification matters before any deposit
Lapsed accreditations are the most common silent failure on UK trade hires — registrations expire annually and not every trader updates their listing. Always verify the Gas Safe number on the public register on the day you sign, not at first meeting. On TradeMatch, every Gas Safe-registered tradesperson is independently re-checked before they can quote on your job, and the registration link is shown on their profile so you can confirm yourself.
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Up to 5 quotes from UK tradespeople — every Gas Safe-relevant member independently verified by TradeMatch. Escrow-protected payments. Reviews tied to completed jobs only.
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