About Us
With over 30 years of experience, Leak Patrol provides expert, non-intrusive leak detection, repairs, reinstatement and damp investigations across Hertfordshire, London, Buckinghamshire and Essex.

Founded and operated by Marios Polykarpou, Leak Patrol combines decades of hands-on technical expertise with the latest diagnostic technologies. From thermal imaging and acoustic listening to tracer gas, dye testing and moisture mapping, we identify and resolve leaks quickly and accurately. Our background in carpentry, tiling and flooring also allows us to complete high-quality reinstatement works, offering a full end-to-end service for homeowners, landlords and property buyers. Marios is fully DBS checked and provides detailed leak detection reports suitable for insurance claims, giving clients complete peace of mind.


Ronald Richards
Founder CEO
Learn more about Leak Patrol.
We locate all types of leaks including mains supply leaks, heating system leaks, hot and cold pipe leaks, waste pipe leaks and hidden internal leaks. Our non intrusive technology allows us to find leaks quickly and accurately.
Yes. We provide a full leak detection report that can be submitted to your home insurance provider. This helps support your claim and makes the process smoother and faster.
Absolutely. Once the leak is found, we can carry out the repair and also complete any reinstatement work. Our experience in carpentry, tiling and flooring means your home is restored professionally.
We cover Hertfordshire, London, Buckinghamshire and Essex. If you are just outside these areas, feel free to contact us and we will advise if we can assist.

Expert Leak Detection, Leak Repair & Plumbing Repairs & Installations for every home & business.