Gas engineers in the United Kingdom

Gas Engineers

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4,286 gas engineers across the United Kingdom, each compared on how fast they respond, their reviews and verified credentials — independent evidence, no ads, no paid placement. Add your area below to find someone reliable who can come out now.

Find gas engineers in the United Kingdom

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What to check when hiring gas engineers in the United Kingdom

MyTrustedTraders ranks on independent public evidence — no ads, no paid placement. Use these checks alongside the evidence on each profile before you decide who to contact.

  • By law, anyone working on your gas appliances must be on the Gas Safe Register — ask to see their Gas Safe ID card and check the licence number at gassaferegister.co.uk before they start.
  • Never let an unregistered person touch your gas: unsafe gas work risks carbon monoxide poisoning, fire and explosion, and is a criminal offence.
  • For a boiler or appliance install, get the work and price in writing and keep the Gas Safe / Building Regulations certificate they are required to give you.
  • Confirm they cover your area and can actually come out in your timeframe before anything else.
  • Read recent reviews for reliability and turning up on time — not only the quality of the work.

Which credentials should a gas engineer have? See the guide →

How to judge a gas engineer

Independent, no-ads guidance — the trade-specific checks that matter most, the warning signs, and what to ask before you hire. Use it alongside each trader’s public evidence above.

Verify before you hire

  • Check the engineer's Gas Safe registration live at gassaferegister.co.uk — illegal gas work is a criminal offence, not just bad practice.
  • Confirm their Gas Safe card covers the right appliances — a boiler replacement requires the CENWAT qualification, not just the basic CCN1 certificate.
  • Look for recent reviews (last 12 months), not just a high average — an urgent trade where a 3-year-old rating tells you nothing about availability today.
  • If it's a new boiler, check whether they're a manufacturer-approved installer (Worcester Bosch, Vaillant, Baxi) — it's often the only way to unlock the extended warranty.

Warning signs of a cowboy

  • They can't give you a 7-digit Gas Safe licence number to check — any registered engineer carries one and knows it off the top of their head.
  • They want cash only and offer no paperwork — a legal installation must be notified to Gas Safe, which generates a compliance certificate for your records.
  • They pressure you to decide on the spot during an emergency callout — panic is exactly when rogues push unnecessary power-flushes or full boiler replacements.
  • No paperwork or compliance certificate after the job — without it, a future house sale or insurance claim can be blocked.

Questions to ask before you hire

  • What is your Gas Safe licence number and which appliances are you qualified to work on?
  • Will you notify the installation to Gas Safe and give me a Building Regulations compliance certificate?
  • How soon can you actually get here — today, tomorrow, or later in the week?
  • If you're installing a new boiler, are you an approved installer for that brand so I can claim the full manufacturer warranty?

Frequently asked questions

How do I choose a trustworthy gas engineer?
Compare the public evidence on each profile — how many independent reviews they have and across how many named platforms, the rating and how recent it is, any verified credentials, and the company record. A gas engineer backed by several named sources is harder to fake than one with a single listing.
Does MyTrustedTraders rank or recommend gas engineers for payment?
No. There are no ads and no paid placement. Gas engineers are ranked only by the strength of independent public evidence — no one can pay to rank higher, add a badge, or change their reviews.
Where do the reviews come from?
They're imported from named public review platforms and always shown with the source named — they aren't reviews written on MyTrustedTraders. We cross-check the same business across sources rather than creating new reviews.
What should I check before hiring a gas engineer?
Confirm credentials and insurance directly with the gas engineer, get a written quote, and run the Cowboy Checker on the business first. MyTrustedTraders helps you shortlist on the evidence — it doesn't replace your own checks before you hire.

More ways to check who to trust

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