When managing a property — whether it’s a London rental flat, a buy-to-let in Manchester, or a portfolio across the UK — verifying your gas engineer's Gas Safe registration number is a critical compliance step. Not only does it protect tenants, but it also ensures landlords and developers remain within the law.
A Gas Safe registration number is a unique 7-digit licence number issued to every engineer and business on the Gas Safe Register — the UK’s official authority for gas safety. This number confirms that:
The individual or business is currently Gas Safe registered
The engineer holds the correct qualifications
The registration is valid for specific gas appliances or systems (e.g. boilers, fires, meters)
Every registered engineer must carry a Gas Safe ID card, which displays this number alongside their photo, expiry date, and qualifications.
To check whether a gas registration number is valid and active:
Go to the official Gas Safe Register website
➤ www.gassaferegister.co.uk
Click on “Check an Engineer” or “Check a Business”
Enter the 7-digit licence number found on the ID card or invoice
Verify:
The engineer or company appears on the register
The registration is active and not expired
They’re certified for the exact type of gas work your property requires
If no match is found, do not proceed with the engineer — their work may be illegal.
Under the Gas Safety (Installation and Use) Regulations 1998, UK landlords must:
Only employ Gas Safe registered engineers
Carry out annual safety checks
Keep records of valid CP12 certificates
Provide copies to new tenants within 28 days
Verifying the gas registration number ensures the engineer is fully certified and legally permitted to work on:
Gas boilers and appliances
Pipework and flues
Landlord gas safety inspections (CP12)
Failing to do this could result in invalid insurance, prosecution, or risk to life in case of faulty work.
At Fraser Bond, we manage end-to-end compliance for landlords and property investors across the UK. Our services include:
Gas Safe registration number verification
Engineer vetting and booking
Annual CP12 certificate management
Tenant handover documentation and alerts
We work only with fully accredited Gas Safe engineers, ensuring your property meets legal standards and best practices.
Don’t leave gas compliance to chance. Fraser Bond will verify the registration number and qualifications of any engineer you use — or refer a trusted Gas Safe partner.
Visit FraserBond.com to speak with our compliance team and ensure every gas-related job is legally covered and expertly handled.
