Gas Engineer
Call Si Ltd
Companies House
Active incorporated business
Trust score
86out of 100
Rating5.0★
Review volume65
Source diversity3 sources
VerificationListed
Based on rating, review volume, independent sources and verification. Evidence context — not a guarantee of workmanship.
Trust at a glance
1 checkWhat we can verify about Call Si Ltd
Each card summarises one evidence dimension from public sources — open it for the full detail and named source. This is evidence context, not a guarantee.
See the full verification checklist for Call Si Ltd →Reviews · public evidence
What customers say
5.0out of 5
Highlights
"Si was perfect. Good communication and went the extra mile to complete the work to a very high standard."
"Highly recommend if you want your plumbing fixed with skill! Si was super efficient, clearly knows his stuff, zero stress, rating 10/10. I am grateful and kinda hoping something else breaks so I have an excuse to call again."
"Si was great to have for the job - he came round and inspected the work to be done without charge, then got me booked in quickly and stuck to that date and time. The work was carried out as expected and he left everything clean and tidy, and also talked through with me what he was doing."
Detailed reviews
Si was perfect. Good communication and went the extra mile to complete the work to a very high standard.
Highly recommend if you want your plumbing fixed with skill! Si was super efficient, clearly knows his stuff, zero stress, rating 10/10. I am grateful and kinda hoping something else breaks so I have an excuse to call again.
Si was great to have for the job - he came round and inspected the work to be done without charge, then got me booked in quickly and stuck to that date and time. The work was carried out as expected and he left everything clean and tidy, and also talked through with me what he was doing.
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Local context
Rated 5.0★ — above the local average for gas engineers in LONDON
Across 286 rated gas engineers in LONDON, the typical rating is 4.9★. We compare against the same businesses a homeowner would find searching for this trade locally.
About
Verified central heating in LONDON, London.
Companies House registration
ActiveActive incorporated business
Call Si Ltd is linked to a Companies House entry. This shows the business registration, not evidence of workmanship or service quality.
Legal nameCall Si Ltd
Company number13826835
Incorporated
Registered activityPlumbing & heating installation
Official checkListed
Public evidence checks
Public evidence shownTrust checks and red flags
Public review evidence5.0★ from 65 public reviewsAcross CheckatradeCheckatradeCompanies HouseCompanies House Officers
Sources
3 named sourcesEvery signal, traced to its origin
Review sources
Official sources
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 RegisterIndependent checks
About this business
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.
Public evidence checks
What's strong, and what to check yourself
✓Strong signals
✓Rating: 5.0★
✓Review volume: 65
✓Source diversity: 3 sources
!Worth checking yourself
!Verification: Listed
Smart checks
Before you hire a gas engineer
By 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.
Confirm they cover your area and can actually come out in your timeframe before anything else.
Read recent reviews for reliability and turning up on time — not only the quality of the work.
Good to know
Common questions about Call Si Ltd
What do customers say about Call Si Ltd?
Call Si Ltd has 65 public reviews, averaging 5 out of 5, gathered across 3 independent sources. You can read the individual reviews and where each came from in the reviews section above.
How do I know Call Si Ltd's reviews are genuine?
Call Si Ltd's 65 public reviews are gathered and cross-checked across 3 independent public sources. Reviews spread across several named 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.
Is Call Si Ltd a registered business?
Call Si Ltd is a registered business on Companies House (company number 13826835), incorporated 4 Jan 2022, listed as active. This confirms the legal registration of the business — not evidence of workmanship or service quality.
Want an extra legitimacy check?
Run the Cowboy Checker on Call Si Ltd before you contact them.