Gas Leak Repair London
Smell gas or suspect carbon monoxide? Leave the property, avoid flames and electrical switches, and call the National Gas Emergency Service on 0800 111 999 from a safe location. After the emergency service makes the situation safe, Plumbing 4 London can assess and repair relevant domestic natural-gas faults.

Safety-First
Gas Leak Repair in London
A suspected gas escape is an emergency-service matter first, not a routine booking. Once National Gas has made the situation safe, follow-on work is limited to the verified domestic natural-gas scope of Alexandru Cirstea, Gas Safe licence 6088497.
Correct Emergency Route
Leave the property and call National Gas on 0800 111 999 from a safe location before arranging a repair.
24/7 Follow-on Help
We are available 24/7 to discuss follow-on repair work after the emergency service has made the situation safe.
Verified Registered Scope
Gas work is carried out by Alexandru Cirstea, licence 6088497, within the listed domestic natural-gas categories.
Transparent Estimate
The fault, access and proposed work are assessed before a clear repair estimate is agreed, with no hidden additions.
London Service-Area Coverage
We serve London and aim to attend within the hour, subject to location, traffic and engineer availability.

Do not try to confirm or locate a suspected gas escape yourself. Any one of these signs is enough to leave the property and contact National Gas on 0800 111 999 from a safe location.
A Gas-Like Odour
Do not investigate the source. Leave the property, avoid switches and flames, and call the emergency number from a safe location.
Hissing Near Gas Equipment
Treat an unexplained hissing sound near gas pipework or an appliance as a reason to leave and call National Gas.
Carbon-Monoxide Alarm or Symptoms
If an alarm sounds or occupants feel unwell, leave for fresh air and seek emergency advice. Do not re-enter to investigate.
Unexpected Appliance Shutdown
Stop using the affected appliance. If gas or carbon monoxide may be present, follow the emergency route before repair assessment.




What our clients say
We take pride in providing top-tier property maintenance services to clients throughout London.
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HannahTrustindex verifies that the original source of the review is Google.
Used Alex as a local based plumber to fix an issue with the taps. He knew what the issue was likely to be and came prepped on the first visit, but sadly after opening the taps up it was a full replacement required, but Alex ordered the replacements and fitted the new taps a week later quickly and to a high standard.Posted on Google![]()
D JTrustindex verifies that the original source of the review is Google.
Excellent job, very professional, comes quickly to fix the issue and is transparent on price and expectations.Posted on Google![]()
Domas DregvaTrustindex verifies that the original source of the review is Google.
Fast, professional, highly recommendPosted on Google![]()
Sarah ShawTrustindex verifies that the original source of the review is Google.
Alex was extremely knowledgeable, professional and helpful. He fitted my washer/dryer with ease. I would highly recommend.Posted on Google![]()
Walter BrownTrustindex verifies that the original source of the review is Google.
Very efficient. Our boiler was v old and basically about to go bust. Previously used British Gas, who were useless - signed off the boiler without even looking at it, whereas Alex was fully and transparent, came originally and realised it was a much larger job, didn't charge came back and spent hours fully fixing and repairing. Saved us having to buying a new boiler. Would highly reccommendPosted on Google![]()
Gech NegnTrustindex verifies that the original source of the review is Google.
Thank you for your good servicePosted on Google![]()
Hannah Valentien-BarnesTrustindex verifies that the original source of the review is Google.
Alex did an incredible job fixing a leak and also took time explain what’s wrong etc, would highly recommend calling him out. He is super responsive. Thanks Alex!Posted on Google![]()
Ana TrofinTrustindex verifies that the original source of the review is Google.
I've used Plumbing 4 London multiple times over the years, and I honestly can't recommend them highly enough. They really proved their worth on a major project where another plumber had completely let me down. They stepped in, quickly identified the issues, and got everything back on track with professionalism and expertise. They're always on time, provide honest and accurate advice, and never try to upsell unnecessary work. It's refreshing to deal with someone who's genuinely reliable, trustworthy, and takes pride in doing the job properly. If you're looking for a plumber who turns up when they say they will, gives the right information, and delivers quality work every time, Plumbing 4 London is an outstanding choice. A genuine, dependable chap who I'll continue to use and happily recommend to anyone.Posted on Google![]()
HarryTrustindex verifies that the original source of the review is Google.
Our boiler suddenly stopped working on a freezing morning. I contacted UK Gas Engineer Ltd and they had an engineer out the same day. He quickly found the fault explained everything in simple terms and had the heating back on within the hour. Fantastic service.
Gas Leak Repair
Frequently Asked Questions
What should I do if I suspect a gas leak?
Leave the property, avoid flames and electrical switches, and call the National Gas Emergency Service on 0800 111 999 from a safe location. Follow its instructions and do not arrange routine repair work until the emergency situation has been made safe.
Can I safely check where a gas smell is coming from?
No. Do not search for the source, test appliances or operate switches. A smell, hissing sound, carbon-monoxide alarm or unexplained symptoms is enough to leave and call National Gas from a safe location.
Why must a suspected gas leak be treated as an emergency?
A gas escape can create fire, explosion and health risks, while carbon monoxide cannot be reliably detected by smell. Leave the property and use the national emergency route instead of trying to judge the severity yourself.
What happens after National Gas makes the situation safe?
Once the emergency service confirms the situation is safe, we can assess relevant domestic natural-gas pipework or appliance faults. We explain the proposed scope and provide an estimate before follow-on work begins.
Can I repair a gas leak myself?
No. Never dismantle, alter or repair gas pipework or appliances yourself. Follow the emergency instructions first and use a suitably registered Gas Safe engineer for any subsequent gas work.
Do you provide 24/7 follow-on gas repair help?
Yes. Plumbing 4 London is available 24/7 for follow-on repair enquiries after the emergency service has made the situation safe. We aim to attend within the hour, subject to location, traffic and engineer availability.
How long does follow-on gas repair take?
The time depends on the fault, access, appliance and any parts required. We provide a timeframe after assessment rather than promising a fixed repair duration before the issue is known.
How can I reduce gas-safety risks at home?
Follow manufacturer servicing guidance, use a suitably registered engineer for gas work, keep vents unobstructed and maintain a correctly positioned carbon-monoxide alarm. These measures support safety but do not replace emergency action.
Which parts of London do you serve?
We serve customers across London as a service-area business. Attendance depends on location and engineer availability; the exact appointment window is confirmed when you contact us.
Follow-on Gas Repairs
Across London
Plumbing 4 London serves London as a service-area business. We are available 24/7 for follow-on repair enquiries, but National Gas on 0800 111 999 is always the first contact for a suspected gas escape or carbon-monoxide emergency.

Safety-First
Gas Leak Repair Process
Our role begins after the National Gas Emergency Service has made the immediate situation safe. Any registered gas work is then limited to the verified domestic natural-gas scope of Alexandru Cirstea, Gas Safe licence 6088497.
- Leave the property
- Avoid switches and flames
- Call National Gas: 0800 111 999
- Follow emergency instructions
- Do not investigate the source
- Do not re-enter to test appliances
- Arrange repair only when safe
- Domestic gas pipework
- Boilers and central heating
- Cookers and hobs
- Domestic gas fires
- Domestic water heaters
- Exact appliance confirmed
- Verified registered scope only
- Post-emergency fault assessment
- Clear proposed repair scope
- Transparent estimate before work
- No hidden additions
- Parts requirements explained
- Likely duration explained
- Guaranteed workmanship
- 24/7 follow-on enquiries
- London service-area coverage
- Availability confirmed at booking
- Gas Safe licence 6088497
- National Gas remains first contact
- No DIY gas-work advice
- Manufacturer guidance respected
