acoustic leak detection with a thermal camera in Barnet

Your Solution for Water Damage Prevention


Best & Most Comprehensive Leak Detection Service In London 

We utilise cutting-edge technology and experienced plumbers to pinpoint internal leaks quickly, accurately, and with minimal disruption to your home or business.


Imagine waking up to a flooded basement or a damp, mouldy bathroom ceiling. Water leaks can cause extensive damage to your property and pose serious health risks if left undetected. At MML Plumbing, we’re your trusted leak detection specialists in London.

Ask for a special leak detection price online

Same Day Repair Services on a Fixed Price Quote

Our unique service includes same-day leak repair when possible by Gas Safe certified plumbers, and immediate re-testing, all handled by a single engineer fully equipped with advanced leak detection technology. Unlike our competitors, our engineers are fully qualified gas-safe registered, heating and plumbing engineers, ensuring comprehensive service and expertise on-site.

Conducting a thermal camera inspection on a radiator

MML Plumbing is your water leak detection specialists

Do you suspect a hidden leak in your London home or business? Unexplained spikes in your water bill, damp patches appearing on walls, or the sound of running water when everything is off are all telltale signs of a leak wreaking havoc behind your walls, under your floors, or within your central heating system. Ignoring a water leak can lead to major problems down the road, so it’s crucial to act fast.

That’s where MML Plumbing, your trusted water leak detection specialists, come in. We understand the frustration and worry that a leak can cause. That’s why we offer comprehensive water leak detection services for both residential and commercial properties in London.

Uncovering Internal and External Leaks with Specialist Expertise

Unlike some leak detection companies, MML Plumbing utilizes specialist equipment and the expertise of our highly trained leak detection specialists to accurately locate leaks, both internal and external. We don’t rely on guesswork; we use advanced tools like:

  • Advanced Leak Detection Techniques
  • Acoustic Microphone
  • Endoscopic Cameras
  • Moisture Meters
  • Pressure Testing
  • Thermal Imaging

Say Goodbye to Hidden Leaks and Hello to Peace of Mind

We specialize in locating leaks, both internal and external leaks:

Types of Leaks We Detect

  • Central Heating Leaks: We can identify leaks within your central heating system, preventing boiler problems and ensuring optimal heating efficiency. A central heating leak is internal most of the time, the only sign you have is boiler losing pressure. Here you need a non-destructive leak detection team, rather than a guess.
  • Mainswater Leaks: They can occur within the main water supply pipes leading into your property, potentially causing significant water loss and damage if not promptly addressed.
  • Hot & Cold Water Leaks: These leaks can occur in both the hot water and cold water pipes within your plumbing system, leading to wasted water and higher utility bills.
  • Buried & Hidden Pipes: Leaks in buried or hidden pipes, such as those under concrete slabs or within walls, can be challenging to detect and may require specialized equipment for accurate location and repair.
  • Underfloor Heating Leaks: Leaks in underfloor heating systems can be particularly tricky to locate. Our specialists use advanced methods to pinpoint the issue without damaging your floors.
  • Drain and Waste Leaks: Drain and waste issues involve the escape of wastewater from plumbing fixtures, posing risks of water damage, foul odours, and potential health concerns if not promptly detected and repaired.
  • Losing Pressure? We Find the Culprit: If your boiler is losing pressure, it might be due to a leak. We can pinpoint the source of the problem and recommend the best course of action.

Get a Free Quote Today in Minutes

Take the first step towards resolving your leak issues. Contact us now to discover how our professional, non-invasive leak detection services can protect your property at competitive rates. Reach out for your free quote today!

Our Approach

Our skilled engineers can detect leaks and repair most leaks on the same day. ( T&Cs apply) After repairs, we conduct thorough re-testing to minimize the chance of overlooking any leaks.

Insurance Coverage

Costs for our services are typically covered by building insurance under ‘trace and access’. ( T&Cs apply) We provide a detailed written report and itemized invoice to assist with insurance claims.

sound leak detection in the concrete floor

Why choose MML Plumbing?

Specializing in leak detection and fixing services for over 15 years, we offer the most reliable and comprehensive leak detection and repair services with paperwork.

– Our engineers are qualified and experienced plumbers and heating engineers.

– All engineers are directly employed by us and undergo DBS checks.

– We are Gas Safe Registered.

Service Coverage

Our water leak detection and repair service covers all London areas.


About Leak Detection

Definition and Importance of Leak Detection

Leak detection is a crucial process to identify and locate internal water leaks in residential and commercial properties. Early detection can prevent water damage, reduce repair costs, and minimize disruption to daily life.

Conducting a thermal camera inspection on a radiator

When do you need water leak detection specialists?

You might need a leak detection specialist in several situations:

1. Unexplained Increase in Water Bills: If your water bills suddenly spike without a clear reason, it could indicate a hidden leak.

2. Visible Signs of Water Damage: Water stains on ceilings or walls, damp spots on floors, or mould growth could all point to internal leaks.

3. Reduced Water Pressure: A sudden drop in the pressure throughout your home could be due to a leak in the plumbing system.

4. Continuous Running of Water Meter: If your water meter continues to run even when all water sources are turned off, there might be a leak somewhere.

5. Pooling Water: Puddles of water in unexpected areas, especially outdoors or around the foundation of your home, could indicate a leak in underground pipes.

6. Sounds of Running Water: If you hear the sound of water running when no taps or appliances are in use, it could signify a leak.

7. Foul Odors: Musty or mouldy smells, especially in areas like basements or crawl spaces, could be caused by internal water leaks.

MML Plumbing: Your Partner in Leak Detection and Repair

MML Plumbing goes beyond just finding leaks. We offer a comprehensive leak repair service to fix the suspected problem and prevent further damage:

  • Minimal Disruption Repairs: Our experienced plumbers prioritize minimally invasive techniques whenever possible to fix leaks.
  • Hidden Water Leak Repair: We specialize in repairing hidden water leaks, and restoring your property to its pre-leak condition.
  • Fixed Price Quotes: We provide transparent pricing for both leak detection and repair services, so you know the cost upfront.
  • Helping You Access Insurance Cover: MML Plumbing can provide a comprehensive report to help you file an insurance claim for leak-related damage.Book a leak detection company online
leak detection in the ceiling with an endoscope camera

Don’t Wait Until It’s Too Late!

Don’t let a small leak quickly turn into a major disaster with costly repairs and potential structural damage. At MML Plumbing, we’re your one-stop shop for all your water leak detection and repair needs.

We offer a free, no-obligation quotation for our leak detection services. Our friendly team is here to answer your questions and provide expert advice on the best course of action.

Contact our leak detection company today and let our specialists put your worries to rest. We’ll work quickly and efficiently to find and fix the leak, saving you money and protecting your property in the long run.

Are a leak detection company worth it?

Yes, they can be worth it for several reasons:

  • Early detection: A single leak can cause significant damage if left unchecked. Leak detection companies can identify them early before they cause major problems. This can save you money on repairs and prevent structural damage to your home.
  • Accuracy: Leak detection companies have specialized equipment and expertise to locate accurately. This can be difficult to do on your own, especially for hidden ones.
  • Efficiency: Leak detection companies can find them quickly and efficiently, minimizing disruption to your home or business.
  • Peace of mind: Knowing that a professional has identified and addressed any potential burst pipes can give you peace of mind.


How much does it cost to install leak detection systems?

The cost of installing leak detection systems can vary depending on the size and complexity of your home or business, the type of system you choose, and the company you hire.

Who do I call to trace a leak?

If you suspect a leak in your home or business, you should call a qualified leak detection company. They will have the experience and equipment necessary to locate the leak accurately and efficiently.

Look for a company that is licensed, insured, and has experience with leak detection in your area like MML Plumbing in North London.

How do plumbers detect a leak?

Most plumbers are still using a traditional visual inspection, due to a lack of special tools. The tools that a leak detection company is using are expensive and non-destructive.

The specific methods used by a plumber will depend on the type of leak they are looking for and the location of the suspected leak.

At MML Plumbing, our professional service includes thorough investigation using trace and access methods to find the exact location of water ingress. We found a water leak in the boiler pressure system by carefully accessing covers and conducting a comprehensive investigation including a damp investigation. Additionally, we repair water leaks.

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