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5.0out of 5
119 reviews in public evidence9 reviews in the last 12 monthsMost recent review
Customers often mention
Friendly & politeMentioned in 48% of reviews we've read
ProfessionalMentioned in 32% of reviews we've read
Where these reviews are published
Which? Trusted Traders119 reviews · 5.0 avg
Detailed reviews
These are the individual reviews we hold for CJServices, including the highlights above. The 119 headline total is the review volume reported across public review sources.
Customer in Greater London
Customer recommends this business
All work was fast, effiicient, neat, and tidy
Chris installed my new "ecoFIT pure" boiler. The position and fittings are much more convenient than any of my previous boilers. All hot pipes are neatly lagged. Chris has fitted a new shower, and new valves on my rads. All working perfectly with no issues. I have used several plumbers in the past, but I intend to stick with Chris. His services are always in high demand, but I prefer to wait for a few days rather than ask any of my previous plumbers.
Work completed:
Scores listed by Which? Trusted Traders
Customer Service
5 / 5
Quality
5 / 5
Value
5 / 5
Customer in Greater London
Customer recommends this business
Fast but meticulous
Chris installed my new "ecoFIT pure" boiler. The position and fittings are much more convenient than any of my previous boilers. All hot pipes are neatly lagged. Chris has fitted a new shower, and new valves on my rads. All working perfectly with no issues. I've used several plumbers in the past, but I intend to stick with Chris. His services are in high demand, but I don't mind waiting for a few days rather than ask any of my previous plumbers.
Work completed:
Scores listed by Which? Trusted Traders
Customer Service
5 / 5
Quality
5 / 5
Value
5 / 5
Customer in Greater London
Customer recommends this business
Highly Recommended
I have used CJ Services for the past few years for a number of plumbing jobs and completely trust Christy to do everything to a high standard. Christy is genuine, trustworthy, hard working and provides honest advice and a great service. I have also recommended him to others.
Work completed:
Scores listed by Which? Trusted Traders
Customer Service
5 / 5
Quality
5 / 5
Value
5 / 5
Customer in Greater London
Customer recommends this business
Beautiful shower!
Christie is a complete professional in every sense of the word. I let him make all the decisions as he is clearly experienced and his work is immaculate and precision perfect! I'm delighted with my new bathroom!
Scores listed by Which? Trusted Traders
Customer Service
5 / 5
Quality
5 / 5
Value
5 / 5
Customer in Greater London
Customer recommends this business
Amazing work for replacing the boiler
I’m very pleased with the work carried out by CJServices. They replaced my old boiler and water tank with a new, energy-efficient combi boiler. The job was completed quickly and to a high standard. In addition, they replaced a couple of radiators and handled several other fixes along the way, which I greatly appreciated. Christopher took the time to explain each stage of the process, as well as the specific details and considerations of my setup. He was patient, clear, and very helpful throughout. Overall, I’m very satisfied with their work and would highly recommend them.
Work completed:
Scores listed by Which? Trusted Traders
Customer Service
5 / 5
Quality
5 / 5
Value
5 / 5
Read the other 15 detailed reviews on this pageShow fewer reviews
Customer in Buckinghamshire
Customer recommends this business
Excellent Service
Would highly recommend CJ Service. Very professional and completed the install of a new sink and hot tap to a very high standard.
Work completed:
Scores listed by Which? Trusted Traders
Customer Service
5 / 5
Quality
5 / 5
Value
5 / 5
Customer in Greater London
Customer recommends this business
Great service
Cristy provided the boiler service quick and efficiently. He installed my boiler last year and was super friendly and informative. Very happy with the service Cristy provided both times and will continue to have my boiler serviced by him, as well as any other general services needed.
Work completed:
Scores listed by Which? Trusted Traders
Customer Service
5 / 5
Quality
5 / 5
Value
5 / 5
Customer in Greater London
Customer recommends this business
Worcester Bosch boiler service
My boiler was in desperate need of a service. Christy gave me a quote for the service and arrived at the allotted time frame and quickly set to work. There was quite a bit of gunge cleared! His work neatly and his manner straightfoward, a credit to the profession!. I couldn't ask for more!
Work completed:
Scores listed by Which? Trusted Traders
Customer Service
5 / 5
Quality
5 / 5
Value
5 / 5
Customer in Hertfordshire
Customer recommends this business
Outstanding Service and Quality Work
I couldn’t be happier with the service I received. Chrissy was extremely professional, friendly, and polite throughout the whole job. He’s very knowledgeable and took the time to explain everything clearly. He even carried out extra checks that I hadn’t originally hired him for, without any issue at all. The bathroom looks fantastic, and I would highly recommend him to anyone looking for a reliable plumber.
Work completed:
Scores listed by Which? Trusted Traders
Customer Service
5 / 5
Quality
5 / 5
Value
5 / 5
Customer in Greater London
Customer recommends this business
Absolutely outstanding service!!
Christy came out in the middle of the night to fix my tap and was incredibly quick, professional, and courteous. Despite the late hour, his customer service was exceptional, and he made the whole situation stress-free. Highly reliable and truly goes above and beyond, 100% recommend!
Work completed:
Scores listed by Which? Trusted Traders
Customer Service
5 / 5
Quality
5 / 5
Value
5 / 5
Customer in Central Bedfordshire
Customer recommends this business
Reliable, efficient & professional
A very reliable company, troubleshooted my ongoing plumbing problem and came up with a great solution to perfection. Thank you
Work completed:
Scores listed by Which? Trusted Traders
Customer Service
5 / 5
Quality
5 / 5
Value
5 / 5
Customer in Hertfordshire
Customer recommends this business
Boiler Installation
Christy of CJ Services installed a replacement Boiler. The work needed a new flue (condrnsing boiler), and a powerflush to yhe system, with new thermostatic radiator valves throughout. The work was booked in, completed on schedule without any mess whatsoever. Christy was courteous and highly professional. Even yhough the flat was 3 floors up, he installed the flue, and made good the brickwork & pointing to a good standard, so much so, that you can not see ehere the work was carried out. We were concerned that the new carpets might get soiled, but not a single mark or stain anywhere. I fully recommend CJ Services, cost was competative, and all snags overcome with willingness & a smile. Good Job.
Work completed:
Scores listed by Which? Trusted Traders
Customer Service
5 / 5
Quality
5 / 5
Value
5 / 5
Customer in Greater London
Customer recommends this business
Great work
Christy services my boiler every year. He is reliable and always turns up at the time agreed & does a good job
Work completed:
Scores listed by Which? Trusted Traders
Customer Service
5 / 5
Quality
5 / 5
Value
5 / 5
Customer in Hertfordshire
Customer recommends this business
Great work and fast.
Christy is a fantastic worker, polite and friendly, nothing was too much- clearly a very skilled worker, who can turn his hand to anything. We recently had a boiler replaced, a water softener installed, taps fitted, and pipework altered, all done to budget and schedule. Nothing was too much trouble, and everything was cleared up at the end of the day. Christy went above and beyond to ensure the job was well done. Would be very happy to recommend CJ Services.
Work completed:
Scores listed by Which? Trusted Traders
Customer Service
5 / 5
Quality
5 / 5
Value
5 / 5
Customer in Greater London
Customer recommends this business
Excellent Work done on time
I recently hired Chris from CJServices for a complete new shower installation and tiling, and I couldn't be happier with the result .The installation was done to a very high standard. Every detail, from the plumbing to the tiling, was handled with great care and precision. Chris maintained a spotless workspace throughout the project. All debris was cleared away, and the bathroom was left immaculate after each day. The work was completed exactly on schedule, with no delays. Chris was punctual every day and kept me updated on progress. Communication was excellent from start to finish. Chris explained each step, answered all my questions, and was always polite and approachable. I am thoroughly impressed with the quality and professionalism of Chris’s work. The new shower looks fantastic, and the tiling is flawless. I highly recommend CJServices to anyone looking for reliable, high-quality bathroom renovations. Five stars!
Work completed:
Scores listed by Which? Trusted Traders
Customer Service
5 / 5
Quality
5 / 5
Value
5 / 5
Customer in Greater London
Customer recommends this business
Great work
We had a new bathroom fitted to an excellent standard, we agreed a price at the beginning. The trader is polite and friendly and kept informed as the job progressed. He did contact us after the to make sure everything was ok. We have no hesitation in recommending him; we are very pleased with his work.
Work completed:
Scores listed by Which? Trusted Traders
Customer Service
5 / 5
Quality
5 / 5
Value
5 / 5
Customer in Greater London
Customer recommends this business
Investigated gas leak promptly
Chris answered my call and came on the same day as he said he would. He checked the cooker as I mentioned I thought the leak came from the cooker. He explained what he had to do and did the necessary gas checks. He found the problem, showed it to us and fixed it. He charged us at the agreed rate. We will definitely recommend his services.
Work completed:
Scores listed by Which? Trusted Traders
Customer Service
4 / 5
Quality
4 / 5
Value
4 / 5
Customer in Greater London
Customer recommends this business
First Class Local Plumber
Christy is a polite, professional plumber who changed our shower and radiator under difficult circumstances: the work was first class and the finished job was left clean and tidy
Work completed:
Scores listed by Which? Trusted Traders
Customer Service
5 / 5
Quality
5 / 5
Value
5 / 5
Customer in
Customer recommends this business
Christy is great
I called CJ Services for a broken down boiler as he came highly recommended from a good family friend. He came out the same day to come and look at the job and as expected the boiler needed to be replaced as it was leaking very badly. He then came back to me the next day with a quotation and a few different options of what Boiler he recommended offering me a 10 year guarantee which was great. He then came the following week to install the boiler getting everything done in one day and explaining all details to me. I have to say I’m extremely happy with his work and couldn’t recommend him enough. Thank you again, Christy
Work completed:
Scores listed by Which? Trusted Traders
Customer Service
5 / 5
Quality
5 / 5
Value
5 / 5
Customer in Greater London
Customer recommends this business
Prompt, tidy, very good work.
We asked for help as we had a badly dripping kitchen mixer tap which we believed to be beyond repair. The date was agreed and Chris was on time, checked the existing plumbing and the new tap to make sure he was able to do the work and had all the necessary parts. He fitted the new mixer tap which we'd bought and replaced badly corroded pipework and components with new fittings. The working area was left clean and tidy. The bill was reasonable and I am very happy.
Work completed:
Scores listed by Which? Trusted Traders
Customer Service
5 / 5
Quality
5 / 5
Value
5 / 5
Local context
Rated 5.0, in line with the local average for plumbers in Harrow
Across 72 plumbers in Harrow, the typical rating is 4.9 out of 5. We compare against the same businesses a homeowner would find searching for this trade locally.
03
From customer reviews
What customers consistently say
Recurring themes from 25 customer reviews on Which? Trusted Traders.
Respectful and tidy in your home: “completed on schedule without any mess whatsoever” · Which? Trusted Traders, 3 Dec 2025
Reliable and punctualQuoted from 3 reviews
“always turns up at the time agreed” · Which? Trusted Traders, 5 Sept 2025
“Chris was punctual every day” · Which? Trusted Traders, 9 Jul 2025
“arrived promptly on the date booked” · Which? Trusted Traders, 20 Sept 2024
Credentials and associations
Credentials and memberships
1
These credentials and memberships are attributed to named public sources. Check the source before relying on them.
Which? Trusted TraderListed, current status not shown
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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From Which? Trusted Traders
Opening hours
Open 7 days a week
The hours this business publishes online, handy for knowing when to call. Confirm before you set off.
Monday–Sunday
12am–11:59pm
04
Sources
Where this information comes from
1 named public source
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.
Who is CJServices? My name is Christy Casey, a Sole Trader that has been doing plumbing and heating for 11 years now. I started straight from school working and learning from my Dad before going on to do an apprenticeship for 3 years, qualifying with my Gas. I went self-employed when I was 21 and most of my work comes from word of mouth recommendations. The work I carry out includes plumbing, heating, gas, bathroom, kitchens and underfloor heating. The areas I cover include Hertfordshire, Surrey, Berkshire and London. Please don't hesitate to get in touch!
Services they list
Emergency plumbing servicesUnvented cylinder installation and maintenanceWater softener installation and maintenanceBoiler installationBoiler repairBoiler servicingGas cooker installationGas cooker repairGas emergenciesGas fire repair and servicingGas safety testing and inspectionImmersion Heaters
Listed on public sources or the business's own website; check directly that they cover your job before you book.
Always confirm credentials and quotes with the business directly before hiring.
Verify at the sourceCheck them yourself
Approved plumbers on the free WaterSafe register are vetted, qualified to the water regulations and insured. Check they're listed, or find a WaterSafe-approved plumber near you.
Agree the call-out fee, the hourly or fixed rate, and whether parts are charged on top, in writing, before an emergency plumber starts. Out-of-hours overcharging and 'while I'm here' add-ons are common complaints.
✓
Be wary of a plumber who, on a first visit, says your whole system or boiler must be replaced. Get a second opinion and an itemised quote (parts and labour separately) before agreeing to major work.
✓
Gas and boiler work is a separate, regulated trade, not general plumbing. Make sure anyone working on a gas appliance is specifically registered to do gas work, and ask to see that registration before they start.
Want an extra legitimacy check? Run the Cowboy Checker on CJServices before you contact them.
CJServices has 119 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 CJServices?
CJServices has 119 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 CJServices' reviews are genuine?
CJServices' 119 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.
Has CJServices had recent public reviews?
CJServices has 9 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 CJServices qualified and accredited?
We hold 1 independently sourced credential for CJServices, 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.
What does CJServices specialise in?
CJServices lists specialist services including Emergency plumbing services, Unvented cylinder installation and maintenance, Water softener installation and maintenance, Boiler installation, Boiler repair, Boiler servicing. If your job is one of these, look for it in their listed services or ask them to confirm for your project.
These describe public evidence MyTrustedTraders held at the stated dates. They are not independent awards, they cannot be bought, and they do not change this business's Trust Score or search position. How milestones are measured
