K Marsh Plumbing & Heating Ltd
Based on rating, review volume, independent sources and verification. Evidence context — not a guarantee of workmanship.
About
K Marsh Plumbing & Heating Ltd** is a trusted, professional firm of Plumbing and heating engineers based in Mitcham in Surrey with 40 years’ experience in...
What customers say
Highlights
"We have used K Marsh plumbers on a number of occasions. We had an emergency in our kitchen when the mixer tap came off and water sprouting everywhere. We turned the stopcock off and phoned K. Marsh. Alfie came as quick as he was able. He was very professional, gave good advice and was friendly and supportive. Well Done Alfie. We are very happy and satisfied."
"George was very efficient and stayed to complete the job when I had to return to local suppliers to replace faulty taps."
"We recently replaced our sink with a vanity unit, tap, and basin that we had independently purchased. Unfortunately, the tap proved to be incompatible with the sink; however, the team were very professional, and solution-oriented in resolving the issue efficiently. In addition, they replaced the mixer tap on the bath to a high standard. Their timekeeping was excellent, and they conducted themselves in a polite, tidy, and professional manner throughout the work. Upon reviewing their website, I noted that they also offer a range of additional services, including electrical work, painting, and a monthly boiler protection plan. We would not hesitate to use their services again in the future."
Detailed reviews
We have used K Marsh plumbers on a number of occasions. We had an emergency in our kitchen when the mixer tap came off and water sprouting everywhere. We turned the stopcock off and phoned K. Marsh. Alfie came as quick as he was able. He was very professional, gave good advice and was friendly and supportive. Well Done Alfie. We are very happy and satisfied.
George was very efficient and stayed to complete the job when I had to return to local suppliers to replace faulty taps.
We recently replaced our sink with a vanity unit, tap, and basin that we had independently purchased. Unfortunately, the tap proved to be incompatible with the sink; however, the team were very professional, and solution-oriented in resolving the issue efficiently. In addition, they replaced the mixer tap on the bath to a high standard. Their timekeeping was excellent, and they conducted themselves in a polite, tidy, and professional manner throughout the work. Upon reviewing their website, I noted that they also offer a range of additional services, including electrical work, painting, and a monthly boiler protection plan. We would not hesitate to use their services again in the future.
I had a nightmare finding a reliable plumber in South West London to replace a boiler who didn’t charge stupid prices. K Marsh Plumbing & Heating were the answer to my prayers! Very fair price for an excellent job. Lovely company. Personable, helpful and polite. I would be very glad to recommend them.
Second time we have used K Marsh. Fitted a new commercial boiler, cylinder and water system. Workmanship 10/10 Customer service 10/10
I needed a replacement boiler. Keith and his team were able to complete this quickly and kept in touch at all points. They worked well in the small space of the kitchen and cleaned up afterwards. I need some additional work doing in the flat and would definitely ask them if they are available to do this.
On needing a new central heating boiler I contacted Keith from Kmarsh Plumbing & Heating. He responded very quickly and subsequently provided me with a comprehensive quote for the work which was carried out the following week. They turned up on time and hardly took a break until the work was complete. I cannot recommend them highly enough, fast, efficient and polite… perfect!
I had a gas leak in my restaurant’s kitchen and needed help urgently. K Marsh Plumbing & Heating Ltd responded immediately and handled the emergency with total professionalism. The engineer did an excellent job—quick, thorough, and clearly very skilled. On top of that, everyone I dealt with was genuinely lovely, friendly, and reassuring during a stressful situation. I’m extremely grateful for their fast response and quality work. Highly recommend! Thank you, Stella
Needed an urgent boiler replacement which Keith quoted on quickly and then had his team install quickly and professionally
Keith and his team were fabulous from the moment I called. My boiler packed in so a new boiler needed fitting. The team made sure I understood what was going on and even after it was fitted I thought there was a problem and Keith came round to check. I would highly recommend this firm.
Extremely helpful, professional and communicative. Visited property and went through job requirements in detail. Did utmost to book us in as quickly as possible as we were without heating and weather was getting colder. Converted an old gravity-fed conventional boiler system to a combi boiler system, did an excellent job, continued working until the water could be re-connected on the first day so that we wouldn't be without overnight, left the property in a tidy manner and were very thoughtful of having minimal impact on our home (e.g. protecting carpets, new pipe placements). Very pleased and would hire again.
The Marsh plumbing team was excellent in all respects. They replaced a 15 year old boiler and the result was better than expected.
Truly professional from the point of initial contact, to boiler installation and post installation clean up and boiler advice. Highly recommended.
Very happy with service received for this boiler check and service. Simple job but it was carried out professionally by a very competent engineer. Price was very clearly explained before work began. Very happy to recommend to others.
Excellent and honest service, responded within 24 hours with a price an install date for a boiler replacement. Hassle free and tidy install, left the property spotless after work was completed, would highly recommend.
Excellent service from my first call to completion of the project! I had a few different issues with an old boiler and cylinder, and Keith and Alfie took time to discuss with me and identify the best fix. Ultimately, Keith’s team installed a new heating and hot water system to a very high standard. They also went above and beyond the scope of the commissioned work to fix some minor plumbing niggles in the house. The team were considerate, responsive to my questions and kept me well updated on progress. I’m really pleased with the end result, and glad to have found a team I can trust to maintain the system over the coming years.
Great service from start to finish! Used K Marsh for Gas meter works on our commercial premises and everything went extremely smoothly. The team were all friendly and explained thoroughly all the work that was carried out. No hidden costs either, which is always a bonus these days. Highly recommend!!
All the work carried out was to an amazingly high professional standard Can not fault the professional care & detail to the work carried out by the team of fitters Gold star performance Clean & very helpful Amazing ⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️
We’ve used K Marsh for several years to maintain our house, for all kinds of jobs like changing a boiler in it’s entirety, replacing a shower, fixing broken sockets and redoing the bathroom silicon. The whole team are very professional and considerate. Prices are agreed in advance so there are no surprises and in the rare situation something isn’t perfect they go out of their way to put it right. We now only use K Marsh for work on our house.
A big thank you to the team, but especially to Scott who was extremely helpful and did a fantastic job fitting the new walk-in shower. I would 100% recommend them.
Trust checks and red flags
Every signal, traced to its origin
Review sources
Official sources
What's strong, and what to check yourself
Public evidence last checked May 2026
Common questions about K Marsh Plumbing & Heating Ltd
What do customers say about K Marsh Plumbing & Heating Ltd?
K Marsh Plumbing & Heating Ltd has 170 public reviews, averaging 4.9 out of 5, gathered across 2 independent sources. You can read the individual reviews and where each came from in the reviews section above.
How do I know K Marsh Plumbing & Heating Ltd's reviews are genuine?
K Marsh Plumbing & Heating Ltd's 170 public reviews are gathered and cross-checked across 2 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.