Mark Granville Plumbing & Heating
Based on rating, review volume, independent sources and verification. Evidence context — not a guarantee of workmanship.
What customers say
These reviews are published independently on the named public source below — not testimonials this trader 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.
Highlights
"Mark was very responsive right from the initial phone call, and he carried out the work very efficiently. We had a leak in our upstairs bathroom, which was difficult to access. The issue was fixed rapidly and in a tidy manner. Highly recommended."
"I recently had Mark in to do a couple of jobs. He is incredibly reliable and trustworthy, always on time and completes the jobs without having to come back another day. He makes sure he has everything he needs by constantly staying in touch via WhatsApp and planning ahead. His experience and expertise are a great asset. Always giving helpful suggestions to help avoid any further problem later down the line. I cannot recommend Mark enough and would not hesitate to call him again for any future jobs."
"Mark arrived really promptly, within 30 mins of my call. Quickly got to work and we were all fixed within another 30 mins. Super polite and friendly. We'll definitely be keeping Mark's number to hand for our next plumbing job. Thank you Mark for saving the day!"
Detailed reviews
Mark was very responsive right from the initial phone call, and he carried out the work very efficiently. We had a leak in our upstairs bathroom, which was difficult to access. The issue was fixed rapidly and in a tidy manner. Highly recommended.
I recently had Mark in to do a couple of jobs. He is incredibly reliable and trustworthy, always on time and completes the jobs without having to come back another day. He makes sure he has everything he needs by constantly staying in touch via WhatsApp and planning ahead. His experience and expertise are a great asset. Always giving helpful suggestions to help avoid any further problem later down the line. I cannot recommend Mark enough and would not hesitate to call him again for any future jobs.
Mark arrived really promptly, within 30 mins of my call. Quickly got to work and we were all fixed within another 30 mins. Super polite and friendly. We'll definitely be keeping Mark's number to hand for our next plumbing job. Thank you Mark for saving the day!
Rated 5.0★ — above the local average for bathroom fitters in London
Across 364 rated bathroom fitters in London, the typical rating is 4.9★. We compare against the same businesses a homeowner would find searching for this trade locally.
Every signal, traced to its origin
Review sources
Public evidence last checked May 2026
About
Plumber in London.
What this business says about itself
What this business says about itself
See their work: Instagram (opens in new tab) · Facebook (opens in new tab)
Online since 1999. Their website domain was first registered in 1999, according to the public domain registry — an independent sign of how long they’ve been operating online (we checked this ourselves, it’s not a claim from their site).
Accreditations it displays — confirm each is current on the official register before you hire:
- TrustMark (Government-endorsed) — 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
Want an extra legitimacy check? Run the Cowboy Checker on Mark Granville Plumbing & Heating before you contact them.
Run Cowboy Checker →Common questions about Mark Granville Plumbing & Heating
What do customers say about Mark Granville Plumbing & Heating?
Mark Granville Plumbing & Heating has 3 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 Mark Granville Plumbing & Heating's reviews are genuine?
Mark Granville Plumbing & Heating's 3 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.
How long has Mark Granville Plumbing & Heating been trading?
Mark Granville Plumbing & Heating's website has been online since 1999, according to the public domain registry — an independent marker of how long they have been established.
