Public evidence profile · Checked March 2026

Black Mammoth Plumbing and Heating Ltd

PlumberLondon5.080 reviews · 1 independent public source
Emergency callout
Plumber
Credentials & registries
3 credentials shown

No Trust Score yet

  • Rated 5.0 from 80 reviews
  • 3 credentials shown

Worth checking: WaterSafe

Based on rating, review volume, independent sources and credential evidence. Evidence context, not a guarantee of workmanship.

Call 07307 210627
From Checkatrade

Emergency callout

Lists emergency callout on Checkatrade for:

  • Plumber

This is how they list themselves on Checkatrade. Call ahead to confirm they can come out for your job right now before you rely on it.

Credentials and associations

Credentials and memberships

3

These credentials and memberships are attributed to named public sources. Check the source before relying on them.

Reviews · public evidence

What customers say

These review totals are published independently on the named public source below, not testimonials this business chose to show. We show the aggregate rating, review volume, and source attribution we hold so you can weigh the evidence yourself.

5.0out of 5
80 reviews in public evidence
How Checkatrade customers rate them (out of 5)
Reliability4.9
Communication5.0
Quality of work4.9
Where these reviews are published
  • Checkatrade80 reviews · 5.0 avg
Local context

Rated 5.0, above the local average for plumbers in London

Across 1283 plumbers in London, the typical rating is 4.9 out of 5. We compare against the same businesses a homeowner would find searching for this trade locally.

Sources

Where this information comes from

4 named public sources

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

Registers and membership directories

Public evidence last checked March 2026

Services they list

Bathroom & Kitchen PlumbingBlocked BathsBlocked SinksBlocked ToiletsGeneral PlumbingPipe FitterPlumbing RepairsPower FlushingRadiator InstallationRadiator RepairRadiator Thermostat Valve InstallationRadiator Thermostat Valve Repair

Listed on public sources or the business's own website; check directly that they cover your job before you book.

Areas served

London

The areas they list covering on a public directory; confirm they cover your address before you book.

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

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.

Check the WaterSafe register
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 Black Mammoth Plumbing and Heating Ltd before you contact them.

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Good to know

Common questions about Black Mammoth Plumbing and Heating Ltd

Is Black Mammoth Plumbing and Heating Ltd a legitimate business?

Black Mammoth Plumbing and Heating Ltd has 80 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 Black Mammoth Plumbing and Heating Ltd?

Black Mammoth Plumbing and Heating Ltd has 80 public reviews, averaging 5 out of 5. The reviews section shows the aggregate rating, review volume, and review source information we hold.

How is Black Mammoth Plumbing and Heating Ltd rated on reliability and quality?

On Checkatrade, customers rate Black Mammoth Plumbing and Heating Ltd by category: Reliability 4.9 out of 5, Communication 5.0 out of 5, Quality of work 4.9 out of 5. These are per-category scores from real published reviews. They show where Black Mammoth Plumbing and Heating Ltd is strongest, not just the overall average.

How do I know Black Mammoth Plumbing and Heating Ltd's reviews are genuine?

Black Mammoth Plumbing and Heating Ltd's 80 public reviews come from a named public review source. MyTrustedTraders brings this public evidence together with no ads and no paid placement: we show the review source information and aggregate rating we hold rather than selling rankings, so you can weigh the evidence for yourself.

Is Black Mammoth Plumbing and Heating Ltd qualified and accredited?

We hold 3 independently sourced credentials for Black Mammoth Plumbing and Heating Ltd, including Gas Safe Register, CITY & GUILDS, bpec Certification Ltd. Each is attributed to the body that issued it in the credentials section. For example, Gas Safe Register is the UK's official gas register. By law, anyone working on your gas appliances must be on it.

What does Black Mammoth Plumbing and Heating Ltd specialise in?

Black Mammoth Plumbing and Heating Ltd lists specialist services including Bathroom & Kitchen Plumbing, Blocked Baths, Blocked Sinks, Blocked Toilets, General Plumbing, Pipe Fitter. If your job is one of these, look for it in their listed services or ask them to confirm for your project.

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