Gas Safe Register: How to Check Your Engineer

By The FixDelivered Team · Updated 2026-09-19 · 5 min read

When it comes to gas appliances and installations in your home, safety isn't just important – it's absolutely paramount. Carbon monoxide poisoning, gas leaks, and explosions are serious risks associated with unsafe gas work. In the UK, the official body responsible for gas safety is the Gas Safe Register. But what exactly does this mean for you, and how can you be certain that the person working on your gas boiler or cooker is genuinely qualified and registered?

What is the Gas Safe Register?

The Gas Safe Register is the official gas registration body for the United Kingdom, Guernsey, Jersey, and the Isle of Man. It replaced CORGI as the official registration body in 2009. By law, any individual or business carrying out gas work must be on the Gas Safe Register. Its primary purpose is to protect the public from unsafe gas work.

Being Gas Safe registered means an engineer has undergone rigorous training and assessment to demonstrate their competence and safety in working with various gas appliances and systems. They are regularly audited to ensure they maintain these high standards. This registration isn't a 'nice to have'; it's a legal requirement for anyone working on gas.

Why is Gas Safe Registration So Crucial?

Using an unregistered or unqualified individual for gas work puts you and your household at severe risk. Unsafe gas work can lead to:

Carbon Monoxide (CO) Poisoning: Often called the 'silent killer', CO is a colourless, odourless, tasteless gas that can be produced by faulty or poorly maintained gas appliances. Symptoms can mimic flu, but CO poisoning can be fatal.
Gas Leaks: Improper connections or damaged pipework can lead to gas leaks, which pose a significant fire and explosion risk.
Fires and Explosions: The most catastrophic outcomes of unsafe gas installations or repairs.
Voided Insurance: Many home insurance policies require that all gas work be carried out by a Gas Safe registered engineer. Using an unregistered person could void your policy in the event of a claim related to gas.

Always remember: only a Gas Safe registered engineer is legally allowed to install, maintain, or repair gas appliances and fittings.

How to Check if Your Engineer is Gas Safe Registered

Verifying an engineer's registration is straightforward and should always be your first step before any gas work commences. There are two primary ways to check:

1. Check the Gas Safe Register Website

The Gas Safe Register has a public-facing website where you can quickly verify an engineer or business.

Visit the Official Website: Go to the Gas Safe Register website.
Enter Details: You can search by an engineer's unique seven-digit licence number, their business name, or their postcode.
Verify Competencies: Once you find their details, the website will show you what types of gas work they are qualified to do (e.g., boilers, cookers, fires, LPG). Ensure their qualifications match the work you need doing.

2. Ask to See Their Gas Safe ID Card

Every Gas Safe registered engineer carries a Gas Safe ID card. You should always ask to see this card upon their arrival, even if you've checked online. It's your right to do so.

Here's what to look for on the card:

The Engineer's Photo: Check that the photo matches the person standing in front of you.
A Unique Licence Number: This seven-digit number is crucial for online verification.
Hologram: All genuine Gas Safe ID cards feature a hologram.
Expiry Date: Ensure the card is in date.
Back of the Card: This section lists the types of gas work the engineer is qualified to undertake. For instance, 'CCN1' indicates core domestic gas safety, while 'CENWAT' covers central heating boilers and water heaters. Make sure their qualifications cover the specific job you need them to do.

If an engineer refuses to show you their card, or if any details seem incorrect, do not allow them to carry out any work. Contact the Gas Safe Register immediately to report your concerns.

Finding a Gas Safe Registered Engineer

Finding a trustworthy and qualified Gas Safe registered engineer is vital. You can use the Gas Safe Register website's 'Find an Engineer' tool, or for a fast and reliable service, consider using platforms like FixDelivered. We connect you with qualified local Gas Safe registered plumbers and engineers quickly. You can find a local Gas Safe registered plumber through our platform, ensuring peace of mind.

Typical Costs for Gas Work (2026 Guide)

While prices can vary significantly based on location, complexity of the job, and the engineer's experience, here are some rough guides for common Gas Safe registered work in the UK for 2026:

Boiler Service: Expect to pay anywhere from £80 to £120 for a standard annual boiler service. This is a crucial preventative measure to ensure efficiency and safety.
Gas Safety Check (Landlord Certificate - CP12): Typically costs between £60 and £100 for checking up to three appliances. Essential for landlords, but also recommended for homeowners.
Boiler Repair: This can vary widely depending on the fault. A call-out fee (which usually includes the first hour of labour) might be £70-£120, with parts and additional labour extra.
New Boiler Installation: A major job, ranging from £1,800 to £4,500+, depending on the boiler type, brand, and complexity of the installation.

Always get a detailed quote before any work begins. Using a service like FixDelivered allows you to agree on the plumber's callout fee upfront, giving you clarity on costs.

What to Do if You Suspect Unsafe Gas Work

If you have any concerns about gas work that has been carried out, or if you suspect someone is working illegally on gas, do not hesitate to act. First, ensure your property is safe – if you smell gas, open windows, turn off your gas supply at the meter, and call the National Gas Emergency Service (0800 111999). Then, contact the Gas Safe Register directly to report your concerns. They have a dedicated team to investigate illegal and unsafe gas work.

Protecting your home and family from the dangers of unsafe gas work is non-negotiable. By always checking for Gas Safe registration, you're taking a vital step towards ensuring your peace of mind. If you need a qualified professional, remember you can always tell us your emergency and we'll help you find a trusted engineer quickly. Learn more about how FixDelivered works to connect you with local experts.

Frequently asked questions

What is the difference between CORGI and Gas Safe Register?

The Gas Safe Register replaced CORGI as the official gas registration body in the UK on 1st April 2009. All gas engineers must now be registered with the Gas Safe Register by law to work legally on gas appliances.

Can a regular plumber work on my gas boiler?

Only a plumber or engineer who is specifically Gas Safe registered and qualified for boiler work can legally and safely work on your gas boiler. Not all plumbers are Gas Safe registered. Always check their ID card and competencies.

How often should I have my gas boiler serviced?

It is recommended to have your gas boiler serviced annually by a Gas Safe registered engineer. This ensures it operates safely and efficiently, and can help prevent breakdowns.

Need a plumber now? Tell us your emergency and FixDelivered will find and confirm an available local plumber near you, usually within the hour.

Written by the FixDelivered Team. Reviewed by Rupert Lowe, Editor. Last updated 2026-09-19.