Gas Safe Registered

Expert Gas Engineer in London

Trusted boiler servicing, gas safety certificates, leak detection, and emergency callouts across London. Same-day service.

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16+Reviews ★4.6
350+Boilers Serviced
12+Years Experience
Gas Safe Registered
Fully Insured
5-Star Reviews
Local Business
OUR SERVICES

Full Gas Services in London

Gas Safety Certificates

Landlord & homeowner gas safety checks, CP12 certificates issued promptly by qualified engineers.

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Boiler Servicing

Annual boiler maintenance, repairs & installations. All major brands covered across London homes.

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Gas Leak Detection

Advanced electronic detection for gas leaks, rapid response to safeguard your property and family.

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Cooker Installation

Professional gas cooker/hob installation, connection and safety testing. Fully certified work.

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Gas Pipe Work

New gas line installation, pipe upgrades, meter relocation and gas supply modifications.

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Emergency Callouts

24/7 gas emergency service for London. No call-out fee, fixed pricing, rapid arrival.

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WHY CHOOSE US

London’s Trusted Gas Engineers

  • Gas Safe Registered & fully insured for your peace of mind.
  • 4.6 ★ rating – 16 verified reviews from London customers.
  • Same-day emergency callouts covering all London areas.
  • Transparent pricing, no hidden charges, guaranteed workmanship.
Call Now: +44 7958 003358
Gas engineer at work
★ 4.6 / 5.0

What Our Customers Say

“AJ Gas fitted a new boiler and ran the gas pipework. Excellent communication, tidy work, and everything was explained clearly. Highly recommended.”

Sarah Mitchell
Wimbledon

“Had a gas leak scare at my flat in Clapham. They arrived within 40 minutes, fixed the leak and issued the safety certificate. Very professional and calm.”

David Okonkwo
Clapham

“Regular boiler service and gas safety certificate for my rental property. Fast, efficient, and the tenant was impressed. Will use again without hesitation.”

Eleanor Foster
Putney

Coverage Area

We cover all of South West London and beyond.

Wandsworth
Putney
Fulham
Clapham
Wimbledon
Richmond
Roehampton
Earlsfield
Call: +44 7958 003358

Frequently Asked Questions

How often should I service my boiler?+
We recommend an annual boiler service to maintain efficiency, safety, and warranty validity. A J Gas & Water Ltd offers reminder services.
Are you Gas Safe registered?+
Yes, we are fully Gas Safe registered (no: 000000) and all our engineers carry ID. We provide certificates for all gas work.
Do you offer emergency callouts?+
Absolutely. We provide 24/7 emergency gas services across London. Call us and we’ll be there within the hour in most areas.
What areas do you cover?+
We cover Wandsworth, Putney, Fulham, Clapham, Wimbledon, Richmond, Roehampton, Earlsfield, and all surrounding SW London.
How much does a gas safety certificate cost?+
Our gas safety certificate (CP12) starts from £75 for a single appliance. Multi-appliance discounts available. Contact us for a fixed quote.

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