If you have searched for a Gas Safe engineer in London, it is usually because something needs checking, fixing or certifying by someone legally qualified to touch gas appliances — and that is not a job to leave to guesswork. Call 020 7183 4810 and we will get a fully Gas Safe registered engineer to you, often the same day.
Smell gas or suspect a leak?
Turn off the gas at the emergency control valve, open windows and doors, do not use any switches, naked flames or your phone inside the property, and leave the building.
Need a Gas Safe engineer today?
Same day callouts across Central and West London, fixed quotes and fully guaranteed work.
Call the National Gas Emergency Service immediately on 0800 111 999, then call us on 020 7183 4810 so we can inspect and make the installation safe once the network operator has attended.
Need a Gas Safe engineer today?
Same-day appointments across London for gas safety checks, boiler work, landlord certificates and appliance installations.
Gas Safe registered is not a marketing phrase — it is a legal requirement for anyone working on gas boilers, cookers, fires and pipework in the UK. Every engineer we send carries a Gas Safe ID card, and every job we complete on a gas appliance is recorded against that registration. That matters for your safety, and it matters for your paperwork if you are a landlord, a homeowner selling a property, or anyone who might need proof of compliance later.
What a Gas Safe engineer from Olia’s covers
- Gas safety inspections and Landlord Gas Safety Certificates (CP12)
- Boiler servicing, repairs and breakdown call-outs
- Boiler installations and replacements
- Gas cooker, hob and fire connections and safety checks
- Gas leak detection and repair
- Gas pipework inspection and upgrades
Why this is not a DIY or handyman job
| The risk | Why it needs a Gas Safe engineer |
|---|---|
| Carbon monoxide | A poorly fitted or badly maintained appliance can leak CO with no smell or colour — testing for this needs proper equipment and training. |
| Legal liability | Unregistered gas work is illegal, can invalidate your home insurance, and puts landlords in breach of their legal duties. |
| Hidden faults | Many gas faults are not visible without stripping down and testing the appliance — something that requires the right tools and certification. |
Stop and call us now if…
- You can smell gas anywhere in or around the property
- An appliance is producing yellow or orange (rather than blue) flames
- You see soot or staining around a boiler, fire or cooker
- A carbon monoxide alarm has sounded
- You are a landlord and do not have a current CP12 certificate
Putting off a gas safety check because an appliance seems fine is one of the most common ways small issues turn into dangerous ones — and if you are a landlord without a valid CP12, you are also breaking the law and risking your ability to serve a Section 21 notice.
How Olia’s Plumbing & Heating handles it
- You call 020 7183 4810 and tell us what you need — a check-up, a certificate, a repair or an installation
- We book a Gas Safe registered engineer, usually with same-day or next-day availability
- The engineer inspects, tests or repairs the appliance using calibrated equipment
- You receive full documentation, including a CP12 certificate where relevant
We are fully insured, every engineer is Gas Safe registered and ID-checked, and we stand behind every job we do.
Book your Gas Safe engineer
Covering Central, West and South West London with fast response times.
Frequently asked questions
How do I know an engineer is really Gas Safe registered?
Every registered engineer carries a Gas Safe ID card with their photo, licence number and the specific types of gas work they are qualified to do. You can also check the Gas Safe Register online. All our engineers are fully registered and we are happy to show ID on arrival.
How much does a Gas Safe engineer cost in London?
It depends on the job — a routine safety check costs less than an emergency call-out or an installation. Call 020 7183 4810 and we will give you a clear price before any work starts.
Do I need a Gas Safety Certificate as a landlord?
Yes. UK law requires landlords to have gas appliances checked annually by a Gas Safe registered engineer and to hold a current CP12 certificate. We issue these on the day of inspection.
What should I do if I smell gas?
Turn off the gas at the emergency control valve, ventilate the property, avoid naked flames and switches, leave the building, and call the National Gas Emergency Service on 0800 111 999. Then call us on 020 7183 4810 so we can make the installation safe.
Can you fit a new boiler as well?
Yes, our Gas Safe engineers handle boiler installations and replacements as well as servicing, repairs and safety inspections.
Whatever the gas job, get it done properly and legally the first time. Call 020 7183 4810 to book a Gas Safe registered engineer, or use our contact form and we will call you back.
Related services: Boiler Service London, Gas Engineer London, Landlord Gas Inspection Central London, Gas Leak Detection Central London
Peyman
CEO & Founder — Gas Safe Registered Engineer
Peyman is the founder of Olia's Plumbing & Heating, a London based team with over 15 years of hands on experience in boiler installation and repair, central heating, gas work and emergency plumbing. He personally oversees jobs across Central and West London and writes these guides to help homeowners understand their heating systems.
- Gas Safe Registered
- 15+ years experience
- Covering all of London
