Gas Leak Detection & Repair in East London
Suspect a gas leak? Gas Safe registered engineers locate and repair leaks safely across East London. If you can smell gas now, call 0800 111 999 first.
Gas Safe Registered · 587401
Manufacturer Approved
Fully Insured
Same-Day Service
Local Engineers
Upfront cost — no obligation A gas leak is one of the most serious problems in any home, and it should only ever be handled by a Gas Safe registered engineer. Gas First locates and repairs gas leaks across East London using proper detection equipment, finding the source quickly and making your home safe. If you can smell gas at this moment, act first: open windows, avoid anything that could spark, turn off the supply at the meter if safe, and call the free National Gas Emergency Service on 0800 111 999 — then call us to find and fix the cause.
What does a gas leak smell like — and what are the other warning signs?
The clearest sign is the distinctive ‘rotten egg’ smell added to gas. Others include a hissing sound near pipework or an appliance, a pilot light that keeps blowing out, dead or dying houseplants near the suspected area, or an unusually high gas bill. Physical symptoms such as headaches, dizziness or nausea that improve when you leave the house can point to a leak or carbon monoxide, and both need urgent attention. See our full signs of a gas leak guide for the complete list.
The clearest sign is the distinctive ‘rotten egg’ smell added to gas.
How a Gas Safe engineer locates and fixes a gas leak
We carry out a gas tightness test to confirm whether the system is losing gas, then trace the leak to its source, whether that’s a joint, a length of pipework, or a faulty appliance connection. Once located, we repair or replace the affected component and re-test to confirm the system is sound and safe before signing off.
We carry out a gas tightness test to confirm whether the system is losing gas, then trace the leak to its source, whether that’s a joint, a length…
Why Gas First for leak detection
We carry proper gas detection equipment rather than guesswork, and every engineer is Gas Safe registered (587401), working from local bases in Bow and Dagenham. If you’re dealing with an active leak right now — you can smell gas, or a leak has just been confirmed — treat it as an emergency call-out and call us immediately; we prioritise genuine leaks ahead of routine bookings. For anything less urgent, such as a suspected slow leak or a high gas bill you can’t explain, we can trace and repair it on a normal booking.
We carry proper gas detection equipment rather than guesswork, and every engineer is Gas Safe registered (587401), working from local bases in Bow and…
A recent gas leak trace in East Ham
In East Ham, a tenant smelled gas and called Cadent’s emergency line. Cadent attended, traced the smell to near the cooker, and isolated the gas supply to the whole property to make it safe, leaving the tenant without gas for cooking, heating or hot water. The landlord called us, and we were on site within two hours. We traced the leak to the gas hob itself, disconnected it, and confirmed there were no further leaks anywhere on the supply, all within an hour of arriving, so the gas supply could be safely restored to the rest of the property. Once the landlord had ordered a replacement hob, we went back and fitted the new gas hob as soon as it was delivered, so the property had a full, safe gas supply again.
Frequently Asked Questions
What does a gas leak smell like?
Gas has a distinctive added smell, often described as rotten eggs or sulphur. If you notice it, treat it as urgent.
What should I do if I smell gas?
Open windows and doors, avoid electrical switches and naked flames, turn off the gas at the meter if safe, leave if the smell is strong, and call 0800 111 999. Then call us to locate and repair the cause.
How do you find a gas leak?
We carry out a tightness test to confirm a loss of gas, then trace it to the exact source using detection equipment, repair it, and re-test to confirm the system is safe.
Is a gas leak dangerous?
Yes — leaks risk fire, explosion and carbon monoxide exposure. They must only be handled by a Gas Safe registered engineer.
How long does it take to fix a gas leak?
It depends on where the leak is and what's causing it. Many minor leaks — a loose fitting or a faulty appliance connection — are found and made safe within a couple of hours. Leaks in concealed pipework take longer, because the pipe has to be traced and exposed first. We always make the property safe first, then give you a clear idea of the repair and timescale before carrying it out.
How much does gas leak detection cost?
It depends entirely on where the leak is and what it takes to fix — a loose fitting is a different job to concealed pipework. We trace and confirm the fault, then give you a clear price before any repair work starts.
Can I try to find or fix a leak myself?
No. Gas work is illegal for anyone who isn't Gas Safe registered. Make the area safe, call the emergency line if you smell gas, and let a registered engineer handle it.
What Our Customers Say
Rated 5 stars by customers across East London
“I called Gas First Ltd for an emergency gas leak. We are in Barking and they came same day and fixed the leak for us. Very professional and clean job. Will use again and definitely recommend.”
Afzal Ali | Barking, East London
“Gas smell detected and leak repaired same day.”
Andrew Wille | Dagenham, Essex
“Emergency callout resolved quickly.”
Thofael Ahmed | Stratford, East London
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Why Choose Gas First Ltd?
Professional, reliable, and certified gas engineering services across East London
Gas Safe Registered
All work carried out by fully certified Gas Safe engineers
Fast Emergency Response
Quick attendance for urgent gas & heating issues across East London
Transparent Pricing
Fair quotes with no hidden charges — you know the cost upfront
5-Star Customer Service
Rated highly by homeowners & landlords across East London
Experienced Local Engineers
Skilled team covering all East London boroughs
Domestic & Commercial
Services for homes, rentals, and businesses
Areas We Cover
We provide gas, boiler, and plumbing services across East London and nearby areas.
Need a Reliable Gas Engineer in East London?
Contact Gas First Ltd today for fast, professional gas, boiler, and plumbing services across East London.