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Water Leak Detection in London (150)

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0800 Homefix Ltd Logo

0800 Homefix Ltd

9.32(1353 reviews)

Operates in London

Services & skills
Plumber
Water Leak Detection
Emergency Plumber Service
Plumbing Repairs
Blocked Sinks
Mayfair Plumbers Logo

Mayfair Plumbers

9.5(356 reviews)

Operates in London

Services & skills
Plumber
Water Leak Detection
Plumbing Repairs
Radiator Thermostat Valve Installation
Emergency Plumber Service
0800 Homefix Ltd Logo

0800 Homefix Ltd

9.32(1353 reviews)

Operates in London

Services & skills
Plumber
Water Leak Detection
Radiator Thermostat Valve Repair
Thermal Dynamics
Shower Repair

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FASTFIX LONDON Ltd Logo

FASTFIX LONDON Ltd

9.56(243 reviews)

Operates in London

Services & skills
Plumber
Water Leak Detection
Blocked Toilets
Radiator Thermostat Valve Repair
Power Flushing
EMERGENCY PLUMBER LONDON LTD Logo

EMERGENCY PLUMBER LONDON LTD

8.92(141 reviews)

Operates in London

Services & skills
Plumber
Water Leak Detection
Emergency Plumber Service
General Plumbing
Shower Repair
Gate Leak Detection Logo

Gate Leak Detection

10(45 reviews)

Operates in London

Services & skills
Plumber
Water Leak Detection
McConnell utilities Logo

McConnell utilities

9.99(56 reviews)

Operates in London

Services & skills
Plumber
Water Leak Detection
Water Supply Pipe Repairs
Water Mains Specialist (Pipe Replacement, Moling and Lead Pipes)
Ramadan Ceka Logo

Ramadan Ceka

9.66(25 reviews)

Operates in London

Services & skills
Plumber
Water Leak Detection
Power Flushing
Shower Installation
Shower Repair
On Site Plumbing & Electric Limited Logo

On Site Plumbing & Electric Limited

10(44 reviews)

Operates in London

Services & skills
Plumber
Water Leak Detection
Pipe Fitter
General Plumbing
Unvented Hot Water Cylinder Servicing / Repair
Chislehurst Plumbing & Heating Ltd Logo

Chislehurst Plumbing & Heating Ltd

9.95(266 reviews)

Operates in London

Services & skills
Plumber
Water Leak Detection
Blocked Baths
Underfloor Heating Installation
Bathroom & Kitchen Plumbing
Hackney Plumbing and Heating Limited Logo

Hackney Plumbing and Heating Limited

9.87(250 reviews)

Operates in London

Services & skills
Plumber
Water Leak Detection
Tap Repair
Unvented Hot Water Cylinder Installation
Power Flushing
Heatflow Plumbing & Gas Ltd Logo

Heatflow Plumbing & Gas Ltd

9.69(343 reviews)

Operates in London

Services & skills
Plumber
Water Leak Detection
Blocked Toilets
Blocked Sinks
Water Supply Pipe Repairs

Find water leak detection services in London

Struggling with a hidden water leak? Whether you're in a terraced home in Islington, a modern apartment in Southwark or a family house in Croydon, Checkatrade can help you find leak detection services near you. Our directory helps you connect with verified plumber leak detection services that use the proper tools to pinpoint leaks quickly - helping you avoid costly damage and escalating bills.

From trace and access plumbers to cutting-edge water leak detection services, every company listed has passed up to 12 checks. Whether you’re seeing damp patches, dealing with central heating leak, or need an urgent response for leak detection and repair, we’ll help you find the right leak detection company covering your area of London.

Find the right tradesperson for the job you need

Popular areas we cover in London

No matter where you are, we’ll help you find a leak detection plumber working near you.

  • How much does leak detection cost in London?

    The cost of leak detection services in London varies based on the method and severity of the issue. On average:

    • Water leak detection in the UK costs around £500
    • Prices range from £80 to £1,600 depending on tools used
    • Infrared camera tests: £150 - £1,000
    • Acoustic device detection: £150 - £1,000
    • Tracer gas detection: £250 - £2,000
    • Water service line repairs: £330 - £1,500

    Note: A leak detection plumber won’t usually repair water damage like flooring or ceilings — that will require additional tradespeople.

    Bear in mind, too, that costs tend to be higher in London compared to most other areas of the country, and you may need to pay more in central zones compared to outer boroughs.

    For a full price breakdown, visit our leak detection cost guide.

  • How do I find a good water leak detection service in London?

    Water leak detection companies are not all the same and some offer a better service than others. Finding a reputable tradesperson providing water leak detection in London is a little easier when you use Checkatrade.

    We only approve tradespeople who meet our high standards and pass up to 12 quality checks. We check all of our members and guarantee their work up to £1000 (T&Cs apply) for your added peace of mind.

    You can find Checkatrade approved water leak detection services operating near you by using our simple search tool or requesting a quote online.

    As well as searching our directory, there are several steps you can take to find a reputable leak detector covering London:

    • Ask friends, family and local plumbers for recommendations

    • Check ratings and read online customer reviews

    • Request quotes from at least 3 local companies

    • Ask about experience, costs and leak detection methods used

    Read our leak detection hiring guide for more advice on finding the best tradesperson for your job.

  • What are the most common signs of a hidden water leak?

    Common signs of a hidden water leak include:

    • Increased water bills

    • Water stains on walls, floors and ceilings

    • Mould and mildew growth

    • Unpleasant ‘musky’ smell

    • Damp patches

    • Drops in boiler water pressure

    • Pipe corrosion

    • Puddles on the ground around toilet, taps, baths and sinks

    • Wet patches in the garden and on the drive (during dry weather)

    Finding and fixing a leak will prevent further water damage to your property. Fixing a leak as soon as possible will also save you money on water bills in the future.

    If you have spotted the signs but don’t know where the water is coming from, it is time to hire a water leak detection company in London.

  • What is water leak detection and who needs it?

    Professional water leak detection involves the use of specialist equipment to locate hidden leaks.

    A leak detection company will be needed if a plumber has been unable to find the source of a leak.

    Common types of leak detection equipment include:

    • Infrared cameras

    • Acoustic listening and correlation

    • Tracer reels and utility trackers

    • Moisture metres

    • Pressure testing kits

    • Fluorescent dyes

    Not all water leak detection companies in London use the same equipment and methods. We recommend asking for details of the tools and testing methods used to find the right company for your needs.

  • Where is the most common place for a water leak?

    Leaks can occur anywhere where water is present both inside and from outside the home. Some of the most common places for a water leak are:

    • Taps

    • Shower hoses

    • Bath, shower, and sink drainage

    • Washing machines and dishwashers

    • Flat roofs

    • Boilers

    • Radiators

    • Toilets

  • How long does a leak test take?

    Often a water leak detector won’t know exactly how long the test will take until they arrive at your home.

    That being said, a water leak detection test usually takes approximately half a day to complete.

    The duration of the work will be longer if the pipes can’t be easily accessed.

  • How urgent is a water leak?

    This depends on the size and location of the leak. If you have a small leak that you can’t fix yourself, but you can collect the water in a container to prevent damage, then the leak is not an emergency.

    If water is leaking at force and you need to turn off the water supply at the mains, you’ll need to call an emergency plumber.

  • How does water leak detection equipment work?

    Water detection equipment often works by monitoring the flow of water through a pipe.

    Acoustic sensors can recognise any unusual noises which may indicate a leak and help to identify its location.

  • How is a leak detection test done?

    Water leak detection tests are often made up of two stages: trace and access.

    During the trace stage, a leak detector will aim to use non-intrusive methods whenever possible to test your property’s pipework for leaks. For example, an infrared camera or fluorescent dye may be inserted into the pipes.

    Occasionally intrusive methods such as drilling and digging will be needed for the test equipment to be used correctly.

    Once the leak has been detected your tradesperson will move onto the access stage. This part of the test involves repairing the leak.

    Depending on the extent of the damage, you may choose to hire a plumber to do this work for you instead.

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