- Source checked
- 25 Jun 2026
Public evidence profile
Green Gas London Ltd
Credentials & registries
Which? Trusted Trader
Companies House
Active incorporated business
No Trust Score yet
- Rated 5.0 from 17 reviews across 2 review sources
- 3 reviews in the last 12 months
Based on rating, review volume, independent sources and credential evidence. Evidence context, not a guarantee of workmanship.
Trust at a glance
2 checksWhat we can verify about Green Gas London Ltd
Each card sums up one thing we can check from public sources. Open it for the full detail and the named source. This is evidence context, not a guarantee.
Credentials & registriesWhich? Trusted TraderSee detail →Companies HouseActive incorporated businessSee detail →
See the full verification checklist for Green Gas London Ltd →From Which? Trusted Traders
Opening hours
The hours this business publishes online, handy for knowing when to call. Confirm before you set off.
- Monday–Saturday
- 7:30am–6pm
Credentials and associations
1Credentials and memberships
These credentials and memberships are attributed to named public sources. Check the source before relying on them.
Companies House registration
ActiveActive incorporated business
Green Gas London Ltd is linked to a Companies House entry. This shows the business registration, not evidence of workmanship or service quality.
Legal nameGreen Gas London Ltd
Company number12302809
Incorporated
Registered activityPlumbing & heating installation
Official checkOn the public register
Why this helps you judge trust: this trader is linked to a registered company with named people who are legally accountable for it, on an official register anyone can check, a layer of accountability an unregistered trader doesn't offer. Around 7 years on the register also points to an established business rather than a brand-new one.
Source-listed gallery
19 photosPhotos listed on Which? Trusted Traders
These sources do not label every image as completed work. The gallery may include projects, people, logos or certificates, so it does not count as completed-work evidence.
New radiator installation.jpg
Sink waste installation.jpg
Radiator installation.jpg
Radiator installation.jpg
Boiler service.jpg
Boiler installation.jpg
Sinkerator installation.jpg
Reviews · public evidence
What customers say
These reviews are published independently on the named public sources below, not testimonials this business chose to show. We bring them together and link each one back to where it appeared, so you can open the source and read it yourself.
5.0out of 5
Where these reviews are published
- Which? Trusted Traders14 reviews · 5.0 avg
- Checkatrade3 reviews · 5.0 avg
Highlights
“Thank you so much for sorting out my inherited Hive set-up in which I didn't have much faith. The team is very meticulous, professional and very friendly, a pleasure to deal with. I now have a warm house and a system I can trust. Will definitely call them again in the future.”
“Really nice guys. Came in and identified the issue. New boiler needed, which is for a later date, but managed to restore heating”
“Great communication, fast and friendly work, no attempt at upselling. Very competitive price”
Detailed reviews
These are the individual reviews we hold for Green Gas London Ltd, including the highlights above. The 17 headline total is the review volume reported across public review sources.
Thank you so much for sorting out my inherited Hive set-up in which I didn't have much faith. The team is very meticulous, professional and very friendly, a pleasure to deal with. I now have a warm house and a system I can trust. Will definitely call them again in the future.
Really nice guys. Came in and identified the issue. New boiler needed, which is for a later date, but managed to restore heating
Great communication, fast and friendly work, no attempt at upselling. Very competitive price
Local context
Rated 5.0, above the local average for gas engineers in London
Across 551 gas engineers in London, the typical rating is 4.8 out of 5. We compare against the same businesses a homeowner would find searching for this trade locally.
Sources
3 named public sourcesWhere this information comes from
Everything on this page is drawn from named public sources. Where a source provides a public link, you can open the original and dig deeper.
Review sources
Business and public registers
Check dates vary by source. Where we hold a date, the check shows it.
About
Central heating in LONDON.
Services they list
Boiler installationBoiler repairBoiler servicingGas cooker installationGas emergenciesGas safety testing and inspectionPower flushingRadiators and central heatingImmersion HeatersAutomated HeatingCentral heating systems (installation and servicing)boiler service
Listed on public sources or the business's own website; check directly that they cover your job before you book.
What this business says about itself
From their own website
What this business says about itself
- Good to know: Free quotes
These are statements the business makes on its own website, worth confirming in writing (and on the official registers) before you hire, not independently verified by us.
Your own checks
What to check before you hire
Worth checking yourself
Always confirm credentials and quotes with the business directly before hiring.
Verify at the sourceCheck them yourself
Gas work is restricted by law to Gas Safe registered engineers. If they'll touch a boiler or any gas appliance, confirm they're currently on the register before you hire - it's free and takes a minute.
Check the Gas Safe RegisterBy law, anyone working on your gas appliances must be on the Gas Safe Register. Ask to see their Gas Safe ID card and check the licence number at gassaferegister.co.uk before they start.
Never let an unregistered person touch your gas: unsafe gas work risks carbon monoxide poisoning, fire and explosion, and is a criminal offence.
For a boiler or appliance install, get the work and price in writing and keep the Gas Safe / Building Regulations certificate they are required to give you.
Want an extra legitimacy check? Run the Cowboy Checker on Green Gas London Ltd before you contact them.
Run Cowboy Checker →Independent checks
About this business
Recently reviewed3 reviews in the last 12 months.
A real, registered businessWe cross-checked Companies House: this business is officially registered for work that matches the gas engineer services it advertises - independent confirmation it's a genuine business set up to do this kind of work, not just a directory entry.
How long they've really been tradingOperating since at least 2019 (7 years), according to an independent source, not just their own word.
Company registered2019Website online since2020
Good to know
Common questions about Green Gas London Ltd
Is Green Gas London Ltd a legitimate business?
As of 30 Jul 2026, we hold 17 independent reviews across Which? Trusted Traders and Checkatrade for this business, and Companies House lists (no. 12302809) as active, checked 26 Jul 2026. This is independent public evidence, not a guarantee of workmanship. If anything here is out of date, the business can request a correction.
What do customers say about Green Gas London Ltd?
Green Gas London Ltd has 17 public reviews, averaging 5 out of 5, gathered across 2 review sources. You can read the individual reviews and where each came from in the reviews section above.
How do I know Green Gas London Ltd's reviews are genuine?
Green Gas London Ltd's 17 public reviews are gathered and cross-checked across 2 review sources. Reviews spread across several review sources are harder to fake than a single polished page. MyTrustedTraders brings this public evidence together with no ads and no paid placement: we show where every review came from rather than selling rankings, so you can weigh the evidence for yourself.
Has Green Gas London Ltd had recent public reviews?
Green Gas London Ltd has 3 public reviews dated within the last 12 months. That shows their review history includes recent feedback; it does not prove current availability, so confirm capacity before hiring.
Is Green Gas London Ltd qualified and accredited?
We hold 1 independently sourced credential for Green Gas London Ltd, including Which? Trusted Trader. Each is attributed to the body that issued it in the credentials section. For example, Which? Trusted Trader is Which? Trusted Trader: an endorsement from the consumer champion Which?, given to traders who pass its assessment process.
Is Green Gas London Ltd a registered business?
Green Gas London Ltd is a registered business on Companies House (company number 12302809), incorporated 7 Nov 2019, listed as active. This confirms the legal registration of the business, not evidence of workmanship or service quality.
What does Green Gas London Ltd specialise in?
Green Gas London Ltd lists specialist services including Boiler installation, Boiler repair, Boiler servicing, Gas cooker installation, Gas emergencies, Gas safety testing and inspection. If your job is one of these, look for it in their listed services or ask them to confirm for your project.
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