Gas Safe Registered

Trusted Gas Engineer in London

Expert gas safety certificates, boiler servicing, leak detection & emergency callouts across London. Fully insured, 5-star rated, available 24/7.

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15+

Years Experience

2,800+

Jobs Completed

5.0

Average Rating

Gas Safe Registered
Fully Insured
5-Star Reviews
Local Business

Our Services

Expert Gas & Plumbing Services in London

Gas Safety Certificates

Landlord and homeowner gas safety checks by a qualified Gas Safe registered engineer. Certificates issued on the same day.

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Boiler Servicing

Annual boiler servicing to keep your heating system efficient and safe. We service all major brands across London.

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Gas Leak Detection

Fast, accurate gas leak detection using advanced electronic sniffers. Emergency callouts available 24 hours a day.

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Cooker Installation

Professional gas cooker and hob installation by a certified engineer. We disconnect old appliances and test everything.

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Gas Pipe Work

Gas pipe installation, relocation and repair for domestic and small commercial properties. Full compliance with regulations.

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Emergency Callouts

24/7 emergency gas service. From suspected leaks to boiler breakdowns, we respond fast anywhere in London.

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Why Choose Us

London's Most Reliable Gas Engineers

Gas Safe Registered

All engineers carry a valid Gas Safe Register ID card. Your safety is our priority.

5-Star Rated Service

We maintain a perfect 5.0 rating across Google and Checkatrade. Our customers trust us.

Transparent Pricing

Fixed quotes with no hidden charges. We tell you the cost before any work begins.

Same-Day Service

Emergency callouts 7 days a week. Most jobs booked and completed within 24 hours.

Gas engineer working
5.0 ★

Testimonials

What Our London Customers Say

"Marquis Plumbing installed a new boiler in my flat in Brixton. They were punctual, tidy and the price was very fair. Highly recommend for anyone needing a reliable gas engineer in London."

Sarah Mitchell

Brixton, London

"Called them for a gas leak emergency on a Sunday. They arrived in under an hour, fixed the issue and gave us a gas safety certificate the same day. Outstanding service from a proper local gas engineer."

James Okonkwo

Clapham, London

"We use Marquis for all our rental properties in South London. They provide gas safety certificates quickly and the tenants always compliment their professionalism. A truly dependable gas engineer."

Priya Sharma

Streatham, London

Coverage Area

We Cover All of South London

Fast response times across all surrounding areas.

Brixton
Clapham
Streatham
Balham
Tooting
Stockwell
Camberwell
Lambeth

FAQ

Gas Engineer Questions Answered

How often should I get my boiler serviced?
We recommend an annual boiler service to maintain efficiency, prevent breakdowns and keep your warranty valid. Most manufacturers require a yearly service.
Do you provide gas safety certificates for landlords?
Yes, we issue Gas Safety Certificates (CP12) for landlords across London. We can schedule inspections for multiple properties and email the certificates the same day.
What should I do if I smell gas?
If you smell gas, open windows and doors, do not use any electrical switches, and call the National Gas Emergency Service on 0800 111 999. Then call us for an immediate inspection.
Are you available for emergency callouts on weekends?
Absolutely. We offer 24/7 emergency gas services including weekends and bank holidays. We cover all of South London with a typical response time of under 2 hours.
How much does a gas safety certificate cost?
Our gas safety certificate starts from £72 for a single appliance. Multi-appliance and landlord packages are available at competitive rates. We provide a fixed quote before any work.

Need a Gas Engineer in London?

Call us now for a free quote or emergency service — we're available 24/7.

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