“We had our bathroom remodelled and CJS completed all the electrical work, They advised us on the style of extractor fan, lights and illuminated mirror that were suitable for a bathroom and the safety requirements needed. They worked with our bathroom fitter to carry out the work as and when required. The engineer, Keiryn, was great and always cleaned up. They were efficient, reliable and trustworthy and would highly recommend them.”
Public evidence profile · Checked June 2026
CJS Electrical
- Rated 5.0 from 21 reviews
- Reviewed 8 months ago
How this score is worked out
How this score is made up
See the independent checks
- Licences and credentials0.6 of 8.3
- Ways to reach them8.3 of 8.3
- Reviewed on more than one site0 of 6.2
- Registered company details0 of 4.1
- Photos of their work0 of 2.1
- Industry recognition0 of 1
Missing evidence lowers the score because we can't check it. It doesn't mean it doesn't exist. Claiming a profile never changes the score. Evidence context, not a guarantee of workmanship.
What customers say
These reviews are published independently on the named public source 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.
- Which? Trusted Traders21 reviews · 5.0 avg
Highlights
“After CJS did a complete rewire for us in a previous house, we asked them to do a fairly large upgrade in our current house. They were great throughout. Chris (the boss) made helpful and practical suggestions, including ones which would save us money. They then did a thorough test of the system - which would have been a chance for a less honest trader to "find" lots of problems. CJS just confirmed all was fine for the work to be done. Lee, the engineer who did the work, was a pleasure to have in the house for over a week, and was completely trustworthy (we gave him a key). He coped well working around family life, kids and a dog. He was very organised and left things useable and tidy every day, even though we had floors up and some chasing out. The work was all done well, the standard fittings (where we hadn't chosen something particular that we wanted) were all good quality products. Overall - very happy. Great client care; Chris followed up to make sure we were happy. Highly recommended.”
Detailed reviews
These are the individual reviews we hold for CJS Electrical, including the highlights above. The 21 headline total is the review volume reported across public review sources.
Very Professional Did Everything Expected
Very pleased with this company from start to finish. They did an excellent job fitting bathroom extractor fans. We were notified of costs, arranged dates to fit them within a couple of weeks and received all paper work required. A faulty part was quickly replaced. I have used CJS again for further electrical work and am pleased to have found a reliable company.
Work completed:
- Customer Service
- 5 / 5
- Quality
- 5 / 5
- Value
- 5 / 5
Great Experience
CJS was extremely easy to deal with. I dealt with Jake for organising the appointment, and he was extremely helpful and managed to get us a technician on site the next day when we returned home from holiday to find our electricity was out. The technician was with us early and managed to fault-find and solve the majority of our issues despite it being extremely complex in nature. Can’t recommend them enough, reasonable, timely, and great work.
Work completed:
- Customer Service
- 5 / 5
- Quality
- 5 / 5
- Value
- 5 / 5
Professional All-round
I contacted CJS to get a quote for re-wiring our garage. They had someone out within days and had the quote fully detailed later that day. We managed to get the work booked in for a few weeks later and throughout there was no hassle, and everything just worked as it should. When the guys turned up to do the job they were incredibly friendly, were here when they said they would be and could not have done a better job - everything was so tidy and left in great order. Cannot recommend them highly enough.
Work completed:
- Customer Service
- 5 / 5
- Quality
- 5 / 5
- Value
- 5 / 5
True Professionals
I had cooker circuit installed by another electrician who told us we would need a full rewire. They made promises that they would come back to quote me for the rewire then ghosted me. I then tried another company which ended up much the same. CJS Electrical however came in and saved the day. They had someone out to view the property and quoted us within a week or two. Once we agreed and booked in an appointment they stuck to the arranged time scales and even offered to come sooner when they had an unexpected opening. Communication was great they called a few times to check specific requirements. The guys that arrived on site were polite and kept the house impressively tidy considering the work they had to do. They completed the work on time even when unexpected extras popped up we were able to make arrangements to get everything sorted. They stayed till 7pm on the Friday to clear up and left the house much better than I expected. All cables were tidy and chased into the walls neatly. Really happy with the service on all fronts. If you want the job done right CJS are what you're looking for.
Work completed:
- Customer Service
- 5 / 5
- Quality
- 5 / 5
- Value
- 5 / 5
Job Done.
A small electrical job replacing a switch plate. Done in a pleasant manner very quickly! All working well.
Work completed:
- Customer Service
- 5 / 5
- Quality
- 5 / 5
- Value
- 4 / 5
Read the other 13 detailed reviews on this pageShow fewer reviews
Good quality and reliable
Over the last few years CJS has completed a number of jobs at our house varying from small, one hour, to more complicated, two days. They are responsive to enquiries and provide detailed estimates for the work. They agree a schedule and turn up at the agreed time. Their technicians are skilled and if there is a problem, backup is always available from the head office. Their work is performed to a high standard and test documentation, if required, is provided. I highly recommend CJS for electrical work.
Work completed:
- Customer Service
- 5 / 5
- Quality
- 5 / 5
- Value
- 5 / 5
Always excellent
Clear, detailed and always excellent when it comes to service and rectification works at our sites. CJS are a long time served sub contractor of ours and we will always work closely with them to ensure our premises follow compliance and are at the best possible health and safety standards.
Work completed:
- Customer Service
- 5 / 5
- Quality
- 5 / 5
- Value
- 5 / 5
Excellent service
CJS Electrical are a great company to do business with! They are prompt and timely with their service when it comes to scheduling. As far as workmanship they just cannot be beat and I would recommend them in an instance. Very professional and always available in an emergency when needed.
Work completed:
- Customer Service
- 5 / 5
- Quality
- 5 / 5
- Value
- 5 / 5
Reliable and quality work guaranteed
We have worked with CJS over a number of years and have always found them responsive and reliable. All work is quality assured whether it is for a large project installation requiring project management and solutions development or a simple exchange of plug sockets. Great team in the back office as well as the team who attend site and represent CJS very well
Work completed:
- Customer Service
- 5 / 5
- Quality
- 5 / 5
- Value
- 5 / 5
Electrical work as part of a property renovation
We recently used CJS Electrical to complete extensive electrical work to a property in West Wales. Due to the location of the property, this work was undertaken in our absence but we couldn’t have wished for a more professional, quality and stress-free experience. Chris undertook a thorough survey and identified the work that needed to be done, then both he and James spent time with us planning how best to approach the various aspects of the job. We were more than happy for Geoff and Declan, the electricians, to have a key to the property and had complete faith and trust in their workmanship. They communicated with us at least once a day, sent photos to show how the work was progressing and ensured that we were informed if any unforeseen issues arose that we had to make decisions about. It was a pleasure to be able to visit the property after the work was completed to find that it had been done with care, consideration and most importantly, as agreed. We would highly recommend CJS Electrical.
Work completed:
- Customer Service
- 5 / 5
- Quality
- 5 / 5
- Value
- 5 / 5
Efficient and kind service
I needed some plug sockets in my elderly mother’s bedroom for a TV after she came out of hospital. I was told it could be weeks before anyone was free. However when I explained the situation James visited that morning and assessed the work. By lunch time a very efficient young woman electrician had arrived and started the job. As it is an old house she tested everything first and then got the job done to a much higher standard than we had imagined possible! What kindness and what service. I can’t recommend the team enough. The first point of contact who took the call also deserves praise for making sure all the details were passed on and acted on so quickly. Big thanks to all.
Work completed:
- Customer Service
- 5 / 5
- Quality
- 5 / 5
- Value
- 5 / 5
Fast and Reliable
I called CJS on Friday 7th May having been continually let down by another firm. It was such a refreshing experience. The service was friendly and efficient. The job was completed the same day, to a really high standard with the engineer on time. I can’t recommend highly enough. Fast, friendly, professional and efficient service - I will definitely use again!
Work completed:
- Customer Service
- 5 / 5
- Quality
- 5 / 5
- Value
- 5 / 5
home EV charger installation
CJS Electrical (Wales) ltd carried out the installation of my home electric vehicle charging system. The initial contact, assessment and quotation was carried out with great efficiency. The equipment was in stock so the installation occurred swiftly. The engineer was polite and carried out the installation without any problems and I can now confirm everything is working as it should. I would highly recommend CJS electrical to carry out installation of a home EV charging system. 👍🏼🔌🔋😀
Work completed:
- Customer Service
- 5 / 5
- Quality
- 5 / 5
- Value
- 5 / 5
Superb, efficient service
This was a relatively small job of fitting several lighting appliances in our house during pandemic times but CJS Electricals listened to our request politely. Within 24 hours they communicated with us whether we would accept a ‘cancellation slot’ at short notice. The engineer was friendly, efficient, helpful and had the multiple fittings up in very little time. He was particularly aware of pandemic rules and guidelines. Our experience here was that of a highly efficient friendly service with excellent communication. Price very reasonable. Would use again.
Work completed:
- Customer Service
- 5 / 5
- Quality
- 5 / 5
- Value
- 5 / 5
Always available for technical help
Had a electric boiler system supplied and fitted by CJS over a year ago. Had a slight issue with it this weekend and managed to get hold of a engineer on a Sunday and talked me through the issue.
Work completed:
- Customer Service
- 5 / 5
- Quality
- 5 / 5
- Value
- 5 / 5
Great Service
CJS recently fitted some extra sockets for me. Everyone I spoke to at the company, from initially arranging a quote through to a follow up call after the job from Chris the MD, was friendly & helpful. The electrician did a great job; the work is neat and she was thorough in cleaning up after. I'd use them again & would definitely recommend!
Work completed:
- Customer Service
- 5 / 5
- Quality
- 5 / 5
- Value
- 5 / 5
Excellent Electrical Service
Last evening (Easter Sunday) at about 9.00pm we had a crisis at home with an electrical fault. I rang CJS and spoke to Chris. Instead of coming out, he talked me through the various possibilities and eventually identified the problem. He kindly explained clearly what I had to do and immediately power was restored. I could not be more impressed and grateful.
Work completed:
- Customer Service
- 5 / 5
- Quality
- 5 / 5
- Value
- 5 / 5
Attention to detail, a friendly service and reasonable cost
Chris and the team recently helped with the renovation work we are having done, having used them previously to perform a basic electrical check on the property before we started. They did the work I asked for, and gave suggestions where things could be improved - and not just in areas that needed money spent! The team were flexible to my requirements, always arrived on time, and cleaned up meticulously after them. Would recommend!
Work completed:
- Customer Service
- 5 / 5
- Quality
- 5 / 5
- Value
- 4 / 5
Rated 5.0, above the local average for electricians in Cardiff
Across 82 electricians in Cardiff, the typical rating is 4.9 out of 5. We compare against the same businesses a homeowner would find searching for this trade locally.
What customers consistently say
Recurring themes from 21 customer reviews on Which? Trusted Traders.
Customers who keep coming back: “After CJS did a complete rewire for us in a previous house, we asked them to do a fairly large upgrade in our current house.” · Which? Trusted Traders
Respectful and tidy in your home: “The guys that arrived on site were polite and kept the house impressively tidy considering the work they had to do.” · Which? Trusted Traders, 19 Mar 2025
“When the guys turned up to do the job they were incredibly friendly, were here when they said they would be and could not have done a better job” · Which? Trusted Traders, 5 Apr 2025
“They are responsive to enquiries and provide detailed estimates for the work. They agree a schedule and turn up at the agreed time.” · Which? Trusted Traders, 15 Dec 2024
“The team were flexible to my requirements, always arrived on time, and cleaned up meticulously after them.” · Which? Trusted Traders, 21 Mar 2017
“They completed the work on time even when unexpected extras popped up we were able to make arrangements to get everything sorted.” · Which? Trusted Traders, 19 Mar 2025
“As far as workmanship they just cannot be beat and I would recommend them in an instance.” · Which? Trusted Traders, 29 Nov 2024
“The work was all done well, the standard fittings (where we hadn't chosen something particular that we wanted) were all good quality products.” · Which? Trusted Traders
Credentials and memberships
These credentials and memberships are attributed to named public sources. Check the source before relying on them.
- Source checked
- 25 Jun 2026
Photos 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.
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Opening hours
The hours this business publishes online, handy for knowing when to call. Confirm before you set off.
- Monday–Friday
- 7:30am–5:30pm
Where 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
Public evidence last checked June 2026
About
Providing expert electrical services for business and households in Wales by experienced and friendly professionals for over 35 years. Specialising in design, installation, testing and maintenance.
Services they list
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
What this business says about itself
See their work: Facebook (opens in new tab)
- Emergency availability: Need support now
- Experience they state: more than 35 years
- Areas served: Wales
- Services stated: EV charger installation
Accreditations it displays. Confirm each is current on the official register before you hire:
- NICEIC · verify (opens in new tab)
- TrustMark (Government-endorsed) · verify (opens in new tab)
- Which? Trusted Trader · verify (opens in new tab) · we hold this registration
- RECC (Renewable Energy Consumer Code) · verify (opens in new tab)
- SafeContractor · verify (opens in new tab)
- BAFE registered (fire safety) · verify (opens in new tab)
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.
What to check before you hire
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 registerWant an extra legitimacy check? Run the Cowboy Checker on CJS Electrical before you contact them.
Run Cowboy Checker →Common questions about CJS Electrical
Is CJS Electrical a legitimate business?
CJS Electrical has 21 independent public reviews, rated 5 out of 5. This is independent public evidence gathered from named public sources (no ads, no paid placement), not a guarantee of workmanship. If anything here is out of date, the business can request a correction.
What do customers say about CJS Electrical?
CJS Electrical has 21 public reviews, averaging 5 out of 5. You can read the individual reviews and where each came from in the reviews section above.
How do I know CJS Electrical's reviews are genuine?
CJS Electrical's 21 public reviews come from a named public review source, and MyTrustedTraders links every one back to where it was published, so you can open the source and read them yourself rather than trusting a single curated 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 CJS Electrical qualified and accredited?
We hold 1 independently sourced credential for CJS Electrical, including Which? Trusted Traders. Each is attributed to the body that issued it in the credentials section. For example, Which? Trusted Traders is Which? Trusted Trader: an endorsement from the consumer champion Which?, given to traders who pass its assessment process.
What does CJS Electrical specialise in?
CJS Electrical lists specialist services including Electrical testing services, Electrical installations, Electric Showers, Electrical emergency services, Electrical repairs, Fuse boards. If your job is one of these, look for it in their listed services or ask them to confirm for your project.
What areas does CJS Electrical cover?
They state on their own website that they cover Wales. This is the business's own statement on their website, not something we have independently checked. Confirm they cover your postcode before booking.
How long has CJS Electrical been trading?
CJS Electrical has been reviewed on public sources since 2017.

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