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Gas Leak Detection
in London & the Home Counties.

Certified Gas Safe engineers on-site within 1–2 hours for suspected leaks, faults, and gas safety concerns — securing your property fast, with no hidden costs.

Book A PrimeFix Gas Leak Detection Engineer

Book A PrimeFix Leak Detection Engineer
Starting from £60/half hour

Gas leak detection and safety inspections

A gas leak doesn’t wait for convenient timing. It can start as a faint smell near an appliance, an unexplained hiss near a meter, or a boiler that won’t hold pressure — and it’s not something to investigate yourself. By the time a leak is obvious, the property may already be at risk.

That’s why we treat every call as urgent. Certified Gas Safe engineers attend within 1–2 hours, secure the area, and carry out a full safety audit before anything else happens. Once the source is confirmed, we explain the problem, carry out the repair, and can provide documentation for landlords, insurers, or building management where needed.

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yusra ibrahim profile picture
yusra ibrahim
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Great service! We had a leak in the middle of the night and called Primefix around midnight. The job was booked straight away, and the engineer arrived in less than an hour. Aurel inspected our bathroom, quickly found the source of the leak, and fixed it on the first visit. He saved us a lot of trouble and kept the damage to a minimum. Highly recommended! Primefix will definitely be my go to company from now on.
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Vinobha Yoganathan profile picture
Vinobha Yoganathan
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Had a leak in our bathroom and PrimeFix Group sorted it out quickly. Professional, reliable and got the job done without any hassle. Highly recommend to anyone needing a trustworthy plumber

Owner's reply
Hi Vinobha, We want to thank you for the positive feedback and are delighted that our engineer found the leak in your bathroom. Much appreciated.
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Richard Sirakov profile picture
Richard Sirakov
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
We had a leak in the kitchen ceiling ,Aurel came and resolve the issue within a day. Very professional team. Highly recommended.

Owner's reply
Hi Richard, We want to thank you for your support and positive feedback. We’ll make sure to pass on your kind words to the engineer.
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Yoanna Kusheva profile picture
Yoanna Kusheva
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
We had No hot water on Sunday evening . Matt From PrimeFix came for rescue and fix our boiler with No time. I would recommend Prime Fix to our friends and family. Thank You

Owner's reply
Hi Yoanna, We’re delighted that Mat managed to bring the hot water back and we appreciate your positive feedback.
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Thinesh K profile picture
Thinesh K
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Great service and will highly recommend

Owner's reply
Hi there Thinesh, We’re glad you had a great service and thank you for the recommendation.
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Gnana Kanda profile picture
Gnana Kanda
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Losing over 40 litres of water a day. Previous firm sent two Engineers daily, cost thousands, never found the leak. PrimeFix sent one engineer the same day I booked. James was brilliant, found it in a couple of hours and left a detailed written report with photos for insurance. That is the difference between a bill and a result

Owner's reply
Thanks so much for your kind review really glad James got to the bottom of the leak quickly and left you a proper report , we will pass this to James Thanks for choosing PrimeFix
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ipek yusuf profile picture
ipek yusuf
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Absolutely fantastic work. Quote was given promptly and honestly, the level of dedication to the job is unmatched. 100% would recommend.

Owner's reply
Thanks so much , Ipek! Really glad the quote was straightforward and the dedication to the job showed through.Thanks so much for the recommendation.
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Chimen Hussein profile picture
Chimen Hussein
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
In all honesty I am really chuffed :-) I have never in all of my 58 years seen such a hard working young man to the tea👌he knows exactly what he is doing, and is very professional and respectful. I would 101 % recommend. The work that he has carried out in one day is remarkable. My bath was on the verge of collapsing due to an unseen leak. My bathroom is comming back to life! Thank you G and D :-) forever greatfull.

Owner's reply
Thank you so much for this lovely review! Really glad the leak was caught in time and your bathroom’s back on track . We’ll pass this on to the engineers. Thanks for trusting us.
Posted on Google Google
Xavier B. Mayer profile picture
Xavier B. Mayer
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Excellent experience : — highly competent — pro-active and reactive — always available — prompt and responsive — solution finder and reliable team My leak was very tricky to uncover. They went methodically, and found the answer. Well done team ! 👏🏻👏🏻👏🏻👏🏻

Owner's reply
Hi Xavier, Thank you so much for your kind words and for taking the time to leave us such a great review.We really appreciate it
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erina profile picture
erina
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Great work! Highly recommend, Fast service and charges reasonable amount. Excellent and came with promised support for future wise.

Owner's reply
Hi Erina, We’re delighted to hear that you were left satisfied and we want to thank you for your positive feedback

Gas Safe on every job

Every engineer is Gas Safe registered, so all work meets current safety regulations from the first inspection to the final sign-off.

We only quote once we know what's wrong

Diagnosis comes first, then a confirmed price before any work starts. No call-out fee.

Same-day fixes where it counts

Suspected leaks get priority scheduling. Most call-outs are attended and made safe within 1–2 hours.

Talk to a Heating & Gas Specialist Today

Every quote is confirmed in writing before any work starts. No call-out fee, no parking or ULEZ surcharges, no surprises on the invoice. All work is backed by an 18-month workmanship guarantee.

How We Secure Your Property and Track Down the Fault

Every job follows the same process, in the same order. We isolate the risk first, then investigate. Here’s what happens when we attend a gas safety call-out.

Heating & Gas - Boiler Breakdowns & Repairs

Emergency Isolation

Rapid intervention to safely shut down the gas supply and eliminate immediate fire or health risks, before any diagnostic work begins.

Gas Leaks Detection - Gas Tightness Testing

Gas Tightness Testing

Rigorous pressure checks across the entire gas installation to confirm there's no undetected leak anywhere in the system.

Heating & Gas - Landlord Gas Safety Certificates (CP12)

Meter & Appliance Diagnostics

A full inspection of the gas meter, supply lines, and connected appliances to resolve flow, pressure, or fault issues.

Gas Leaks Detection - Carbon Monoxide Audit

Carbon Monoxide Audit

Testing for the "silent killer" to make sure boilers and flues are venting correctly and safely.

Gas Leaks Detection - Corroded Pipework Inspection

Corroded Pipework Inspection

Identifying aged or damaged gas pipework that's compromising the integrity of the system.

Gas Leaks Detection - Flue & Ventilation Testing

Flue & Ventilation Testing

Confirming appliances have adequate airflow and that exhaust gases are being safely removed from the property.

Transparent Gas Leak Detection Pricing, Always

Every call-out is confirmed in writing before work starts. No call-out fee. No hidden charges.

CALL-OUTS & REPAIRS

Half-Hour Rates

Charged in 30-minute increments 1h after arrival. No call-out fee. From £120 +VAT for the first hour.

ACCOUNT CLIENTS

Portfolio Pricing

Discounted rates for landlords, HMOs, and managing agents with multiple properties. Dedicated account manager included.

No hidden extras: no parking, fuel, ULEZ, or Congestion Charge surcharges. Materials at trade cost plus 30% markup, fully itemised on the invoice.
Account-client portfolios receive discounted rates from the published prices.

Meet the PrimeFix Gas Specialists

Real engineers, real qualifications. The same trusted faces who’ll be at your door, not a subcontractor you’ve never met.

John Mayer | 9+ Years Experience

Gas Safe Registered NVQ Level 3 Plumbing & Heating ACS CCN1 & CENWAT Qualified G3 Unvented Hot Water Certified

“Most engineers chase symptoms. I trace faults back to the actual cause, so customers aren’t calling me back out for the same problem two months later.”

Chris V | 12+ Years Experience

NVQ Level 2 Drainage Construction CSCS Card OS19X CCTV Drainage Survey Qualified

“Most drainage problems aren’t where they first appear. A blockage at one end can be hiding a collapsed pipe further down the line. That’s why getting the camera in early saves everyone time and money.”

Arber J | 25+ Years Experience

NVQ Level 2 & 3 Fully Qualified Electrician Inspection & Testing Qualified PAT Testing Qualified

“There’s not much I haven’t come across after this long in the trade — I take pride in getting it right first time, every time.”

JAMES MCLEAN | 17+ YEARS EXPERIENCE

NVQ LEVEL 2 PLUMBING THERMAL IMAGING CERTIFIED ACOUSTIC & TRACER GAS LEAK DETECTION TRACE & ACCESS REPORTING SPECIALIST

“Finding a leak isn’t about luck or opening up walls. It’s about the right equipment and a methodical process. Get that right and the leak has nowhere to hide.”

AUREL DARA | 15+ YEARS EXPERIENCE

NVQ LEVEL 3 PLUMBING & HEATING QUALIFIED SINCE 2011 LUXURY BATHROOM INSTALLATION SPECIALIST WRAS APPROVED PLUMBER

“A luxury bathroom is only as good as what’s behind the tiles. I build every installation to last, so the finish stays perfect for years.”

Arron H | 15+ years experience

Gas Safe Registered NVQ Level 2 Fully Qualified Plumber

“With 15 years in the trade, I’ve usually got a good idea what’s going on before I’ve even picked up the equipment.”

John Mayer | 9+ Years Experience

Gas Safe Registered NVQ Level 3 Plumbing & Heating ACS CCN1 & CENWAT Qualified G3 Unvented Hot Water Certified

“Most engineers chase symptoms. I trace faults back to the actual cause, so customers aren’t calling me back out for the same problem two months later.”

Arron H | 15+ years experience

Gas Safe Registered NVQ Level 2 Fully Qualified Plumber

“With 15 years in the trade, I’ve usually got a good idea what’s going on before I’ve even picked up the equipment.”

JAMES MCLEAN | 17+ YEARS EXPERIENCE

NVQ LEVEL 2 PLUMBING THERMAL IMAGING CERTIFIED ACOUSTIC & TRACER GAS LEAK DETECTION TRACE & ACCESS REPORTING SPECIALIST

“Finding a leak isn’t about luck or opening up walls. It’s about the right equipment and a methodical process. Get that right and the leak has nowhere to hide.”

Arber J | 25+ Years Experience

NVQ Level 2 & 3 Fully Qualified Electrician Inspection & Testing Qualified PAT Testing Qualified

“There’s not much I haven’t come across after this long in the trade — I take pride in getting it right first time, every time.”

AUREL DARA | 15+ YEARS EXPERIENCE

NVQ LEVEL 3 PLUMBING & HEATING QUALIFIED SINCE 2011 LUXURY BATHROOM INSTALLATION SPECIALIST WRAS APPROVED PLUMBER

“A luxury bathroom is only as good as what’s behind the tiles. I build every installation to last, so the finish stays perfect for years.”

Chris V | 12+ Years Experience

NVQ Level 2 Drainage Construction CSCS Card OS19X CCTV Drainage Survey Qualified

“Most drainage problems aren’t where they first appear. A blockage at one end can be hiding a collapsed pipe further down the line. That’s why getting the camera in early saves everyone time and money.”

Wherever you are, whatever your leak, our standards remain the same

One trusted team serving London and the home counties. The same standards, wherever you’re based.

Book a Prime Fix Gas Engineer

On call around the clock for leak detection, plumbing, heating, electrical, and drainage emergencies.

One number, every trade

On call around the clock for emergencies. For planned work and quotes, we typically respond within the hour during business hours.

24/7 Phone Line

0208 108 0400

Email Us

info@primefixgroup.uk

Hours

Monday to Friday 8am to 6pm | Emergency Line 24/7

Request a Callback

Leave your details and a PrimeFix engineer will be in touch within 60 minutes.

Gas Leak Detection FAQs

Common questions about gas leak detection, answered plainly. If you don't see what you're looking for, call us on 02081080400 and we'll talk you through it.

How much does a gas leak call-out cost?

Our gas call-outs are charged hourly — £120 +VAT covers the first hour, then £60 +VAT for each half-hour after that. There’s no call-out fee, and you’ll get a confirmed price before anyone picks up a tool. Parking, ULEZ, congestion charge and fuel surcharges are never added on top.

 

We guarantee an on-site engineer within 1 to 2 hours of your call for suspected leaks or gas safety concerns, 24/7, 365 days a year.

 

Safety comes first. We isolate the affected supply, secure the area, and carry out a full tightness test and appliance check before any repair work begins.

 

Yes — our Gas Safe registered engineers carry out full CP12 inspections and certification for landlords, covering all gas appliances and flues on the property.

 

Warning signs include yellow or orange (rather than blue) boiler flames, soot marks around appliances, and condensation build-up. If you suspect a risk, leave the property, ventilate if safe to do so, and call us immediately — we test for carbon monoxide as standard on every gas safety visit.

 

Yes — every engineer holds relevant qualifications (NVQ Level 2/3, Gas Safe registration, NICEIC approval where the job calls for it), and PrimeFix itself is CHAS accredited and SafeContractor approved.