“From initial contact, Alex was outstanding. Got to us within a few hours of contacting, quickly found fault, went and got an RCD and fitted it. Another problem was identified (my fault!), which was swiftly rectified. Alex is a very personable, kind and extremely likeable guy, who is also very, very skilled and experienced. Nothing was too much trouble. He explained what he was doing in simple terms. We were so impressed that we are going to arrange for him to fit a new distribution board. Alex is the real deal and we would recommend him wholeheartedly and without reservation.”
Public evidence profile
Cosmos Electrical Services Ltd
Credentials & registries
TrustATrader Approved
Companies House
Active incorporated business
No Trust Score yet
- Rated 5.0 from 226 reviews across 2 review sources
- 14 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 Cosmos Electrical Services 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 & registriesTrustATrader ApprovedSee detail →Companies HouseActive incorporated businessSee detail →
See the full verification checklist for Cosmos Electrical Services Ltd →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
Often reviewed for
Customers often mention
Where these reviews are published
- Checkatrade218 reviews · 5.0 avg
- TrustATrader8 reviews · 5.0 avg
Highlights
“Alex was quick to visit, diagnosed the problem efficiently and solved the issue within half an hour. Very happy with the service.”
“I run three properties and several outbuildings. Alex has helped us update our antiquated electrical system. Including new consumer units, lighting and installation external security lights and power outlets. He is always on time, if not early and has never missed a day. He takes all rubbish away and leaves the site clean and tidy. Of all the trades I have used I can rely on Alex the most.”
Detailed reviews
These are the individual reviews we hold for Cosmos Electrical Services Ltd, including the highlights above. The 226 headline total is the review volume reported across public review sources.
Has done lots of jobs over the years. He is a neat and tidy excellent worker. Have always recommended. He always gives certificates where necessary and goes the extra mile. He is very friendly and efficient.
Has done work for many years and on different properties. Would use no one else, he is the best. He is very knowledgeable and knows his stuff. Is so very reliable, punctual. and extremely thorough. Such a lovely, wonderful man. Definitely 5 stars all round!!.
Alex did a great job at installing a new socket, mounting a tv and chasing data cables and also plastering the wall to patch up any cuts. Was punctual, had quick communication and left the wall in a great state after plastering (not many electricians do this, they usually leave to you to do). Thanks for the work, really happy with the end result!
Alex explained what he was doing and was very polite. He did a very good job and left everything clean and tidy
Alex fitted a security light outside our front door. We were very pleased with his work. Polite and respectful. He was very knowledgeable about his work and would 100% use him again for anymore work 👍
Read the other 9 detailed reviews on this pageShow fewer reviews
Alex has carried out a variety of electrical work for us. He takes great pride in his work and is always helpful and professional. I have no hesitation in recommending him for any electrical work, either big or small. We will be using him again to carry out work in the next few months.
My experience personally was excellent and Alex is so professional and helpful really makes you feel looked after and comfortable. I would 100% recommend to any family and friends.
Has done a few jobs over the last 14 months. He is punctual, efficient and does a very good job
First time using Cosmos Electrical Services and I’m very impressed. Alex installed new earthing points and additional plug sockets with great care and expertise. He was professional, knowledgeable, and explained everything clearly. The work was done to a high standard and the whole experience was smooth and pleasant. I’ll definitely use Cosmos again and highly recommend them for reliable, quality electrical work.
Professional approach, quick reply even though late in the day. Good communication regarding the subject with the electric issue. Thank you.
Verified by Checkatrade
Word carried out quickly, really good communication, neat and tidy, finished item looks good.
Verified by CheckatradeWould recommend Cosmos Electrical Services
Alex was great - we've used him before. He arrived with a new bathroom extractor fan for us ready to fit. He was on time, very tidy, considerate and polite. One fitted he then went and tested evything including waiting to see if the delay feature of the fan turning off was working correctly. Would recommend.
Verified by Checkatrade
Alex , turned up on the designated day at the right time . I had previously had issues with garden lighting & the garden design team said the fault was not their issue . Alex quickly found the problem , replaced a new junction box , converted to lights to more efficient LED . I could not be happier with quality & work carried out by Alex at cosmos . 5 star .
Verified by CheckatradePlug socket fitting
Extremely positive experience! So happy with the results, thankyou so much!
Local context
Rated 5.0, in line with the local average for electricians in Heathfield
Across 9 electricians in Heathfield, the typical rating is 5.0 out of 5. We compare against the same businesses a homeowner would find searching for this trade locally.
From customer reviews
What customers consistently say
Recurring themes from 150 customer reviews across 2 review sources.
Respectful and tidy in your home: “He takes all rubbish away and leaves the site clean and tidy.” · TrustATrader, 9 Feb 2026
“He is always on time, if not early” · TrustATrader, 9 Feb 2026
“Is so very reliable, punctual.” · TrustATrader, 13 Jan 2026
Credentials and associations
1Credentials and memberships
These credentials and memberships are attributed to named public sources. Check the source before relying on them.
- Source checked
- 26 Jun 2026
Companies House registration
ActiveActive incorporated business
Cosmos Electrical Services Limited is linked to a Companies House entry. This shows the business registration, not evidence of workmanship or service quality.
Legal nameCosmos Electrical Services Limited
Company number04190421
Incorporated
Registered activityElectrical installation
Run by1 director (longest-serving director appointed in 2001)
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 25 years on the register also points to an established business rather than a brand-new one.
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
Cosmos Electrical Services Ltd has been vetted and approved by TrustATrader. Covering East Sussex, incorporating a 50 mile radius
Services they list
Electric CookersElectric HeatingElectric RadiatorsElectric Range CookersElectric ShowersElectric SocketsElectric StovesElectrical ContractorsEnergy Efficient LightingExtractor FansFault FindingFuseboard / Consumer Unit Installation
Listed on public sources or the business's own website; check directly that they cover your job before you book.
Areas served
East SussexHeathfield
The areas they list covering on a public directory; confirm they cover your address before you book.
Completed work
3 photosPhotos listed as completed work
These photos were listed as completed work by the business or a public source. They do not verify workmanship.
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
Electrical work in homes in England & Wales should be done by a registered competent person who can self-certify it meets the Part P safety rules. Check they're on the official register.
Check the electrical registerIn England and Wales, notifiable electrical work (new circuits, a consumer unit, anything in a bathroom or kitchen) must by law be signed off under Part P of the Building Regulations. Confirm they will handle that.
Prefer an electrician registered with a government-approved competent-person scheme (NICEIC, NAPIT or ELECSA) so they can self-certify the work meets the wiring regulations.
Insist on the Electrical Installation Certificate (or Minor Works Certificate) when the job is done. It is your proof the work is safe and compliant, and you will need it if you ever sell.
Want an extra legitimacy check? Run the Cowboy Checker on Cosmos Electrical Services Ltd before you contact them.
Run Cowboy Checker →Independent checks
About this business
A real, registered businessWe cross-checked Companies House: this business is officially registered for work that matches the electrician services it advertises - independent confirmation it's a genuine business set up to do this kind of work, not just a directory entry.
Steadily reviewed14 reviews in the last 12 months, in line with their long-term review pace of about 18 a year.
How long they've really been tradingIndependent sources agree they've been operating since at least 2001. That's 25 years, confirmed across 2 separate sources.
Company registered2001First public review2013
Good to know
Common questions about Cosmos Electrical Services Ltd
Is Cosmos Electrical Services Ltd a legitimate business?
As of 29 Jul 2026, we hold 226 independent reviews across Checkatrade and TrustATrader for this business, and Companies House lists Cosmos Electrical Services Limited (no. 04190421) as active, checked 12 Mar 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 Cosmos Electrical Services Ltd?
Cosmos Electrical Services Ltd has 226 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 Cosmos Electrical Services Ltd's reviews are genuine?
Cosmos Electrical Services Ltd's 226 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 Cosmos Electrical Services Ltd had recent public reviews?
Cosmos Electrical Services Ltd has 14 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 Cosmos Electrical Services Ltd qualified and accredited?
We hold 1 independently sourced credential for Cosmos Electrical Services Ltd, including TrustATrader Approved. Each is attributed to the body that issued it in the credentials section. For example, TrustATrader Approved is TrustATrader's approved badge: awarded after it vets the trader's identity and background.
Is Cosmos Electrical Services Ltd a registered business?
Cosmos Electrical Services Limited is a registered business on Companies House (company number 04190421), incorporated 29 Mar 2001, listed as active. This confirms the legal registration of the business, not evidence of workmanship or service quality.
What does Cosmos Electrical Services Ltd specialise in?
Cosmos Electrical Services Ltd lists specialist services including Electric Cookers, Electric Heating, Electric Radiators, Electric Range Cookers, Electric Showers, Electric Sockets. If your job is one of these, look for it in their listed services or ask them to confirm for your project.
How long has Cosmos Electrical Services Ltd been trading?
Cosmos Electrical Services Ltd has been reviewed on public sources since 2013.