PrimeFix specialists use thermal imaging, acoustic surveys, and tracer gas technology to pinpoint hidden leaks behind walls, under floors, and in underground pipes — without unnecessary damage to your home. Same-day response available.
A hidden leak can cause thousands of pounds of damage before it’s visible.
PrimeFix specialists pinpoint the exact source — behind walls, under floors, or in underground pipes — using thermal imaging, acoustic equipment, and tracer gas testing. No unnecessary damage. Full digital report provided for your insurer. Upfront quote before any work begins.
We provide a full range of non-destructive leak detection services for homeowners and landlords across London and the Home Counties.
We locate the exact source of escape-of-water incidents using thermal imaging, acoustic listening, and tracer gas technology, with no unnecessary damage. A full digital report is provided to support your insurance claim.
Leaks hidden beneath floors or behind walls are found using specialist acoustic and thermal equipment. We pinpoint the source precisely, so only the affected area needs attention, not your entire floor.
Rising water bills or unexplained wet patches in your garden often point to a mains supply failure. We locate underground leaks without excavating your full driveway or garden.
Our team is on standby 24/7 to help you find and repair the leaks that are damaging your property and hitting you in the wallet.
Call us directly, or complete the form and we’ll call you back!
A hidden leak is stressful enough without worrying about who you’re letting into your home. PrimeFix brings the precision, documentation, and transparency that homeowners and their insurers rely on.
We locate the source of your leak without tearing up floors or opening walls unnecessarily. Only the confirmed affected area is accessed, protecting your home and keeping repair costs to a minimum.
Every investigation produces a detailed technical report with findings, evidence, and recommended remediation. Our reports are accepted by all major insurers for trace and access claims.
We don’t pass on parking costs, ULEZ charges, or congestion fees — unlike many competitors. Our rates start from £42.50 per 30 minutes, and you’ll always know the full cost before we begin.
PrimeFix holds all relevant accreditations and carries full public liability insurance, giving you complete peace of mind that the work is carried out to the highest professional standard.
EXCELLENT Based on 60 reviews Posted on ray fahtiTrustindex verifies that the original source of the review is Google.
Owner's reply
Hi Ray , Thank you for the feedbackPosted on Matt ConroyTrustindex verifies that the original source of the review is Google. Excellent work with promised support if needed after plumbing in our wunder underfloor heating. Would reccomend 👍🏼
Owner's reply
Hi Matt , Thank you and we really appreciate the feedback. Gland we would help and of course we’re always here if you need any further support in the future 🙏🏻Posted on Kirsty BrownTrustindex verifies that the original source of the review is Google. ⭐️⭐️⭐️⭐️⭐️ We had an underground leak at my 88-year-old mother’s property and contacted Prime Fix Group Ltd. The engineer arrived promptly and, after carrying out an assessment, called me directly to explain the issue, the required work, and all costs involved, as he did not want to stress my mother with the situation. Very professional service from start to finish with no hidden fees at all. Everything was explained clearly before any work was carried out. We submitted the report to our insurance company, who recognised Prime Fix as highly qualified engineers. Highly recommended.
Owner's reply
Hi Mr Brown, Thank you for your kind words and recommendation. We’re glad we could help and make the process as stress-free as possible for your motherPosted on Foyez MiahTrustindex verifies that the original source of the review is Google. Super quick with a solution and well explained. Clean and tidy with no left over mess. Would recommend!Posted on Bruce CheesmanTrustindex verifies that the original source of the review is Google. Jim came out this afternoon and did an excellent job to see if we had a leak. Many tests were done and no leak was found in our property. I have no hesitation in recommending PrimeFix Group.
Owner's reply
Hi Mr Cheesman , Thank you for your kind feedback. We really pleased Jim was able to carry out throughout leak investigation and give you peace of mind . We truly appreciate your recommendation and your supportPosted on Kay Louise HaleTrustindex verifies that the original source of the review is Google. Arrived earlier than expected. Job completely efficiently, very well done. Pleased with service.
Owner's reply
Hi Kay , we do really appreciate your positive feedback 🙏🏻Posted on Patricia CutlerTrustindex verifies that the original source of the review is Google. Jim’s workmanship was first-class, avoiding the worst disruption to my bathroom, and resolving the leak in a very inaccessible spot. He arrived on time, left everything clean and tidy and was courteous and helpful.
Owner's reply
Thank you for your kind review. We’re delighted Jim was able to resolve the issue with minimal disruption and provide the high standard of service we aim for 🔥🔥🔥Posted on lowen michaelTrustindex verifies that the original source of the review is Google.
Owner's reply
Thank you for the feedback we do really appreciatePosted on Aurel BerishaTrustindex verifies that the original source of the review is Google. Amazing communication and service. Would definitely recommend to all !
Owner's reply
Hi Aurel, we are glad that you are satisfied with the communication and the service from our side 🙏🏻Posted on conceicao forechTrustindex verifies that the original source of the review is Google. Shebby did an excellent job with the plumbing work in my house. He was professional, reliable, and clearly knew what he was doing. He explained everything clearly, worked efficiently, and left everything clean and tidy when the job was finished. The quality of the work was outstanding, and I really appreciated his attention to detail and friendly attitude. I’d definitely recommend Shebby to anyone looking for a trustworthy and skilled plumber.
Owner's reply
Thank you for your kind feedback.We’re pleased to hear the engineer was friendly and did a great job . We really appreciated the recommendation and are glad you had positive experiences🙏🏻







Every investigation follows the same process. No guesswork, no unnecessary damage under any circumstances. Here’s what we use to find your leak.
Utilising FLIR E96 high-resolution cameras to visualise temperature variances and locate hidden leaks.
Precision microphones are used to listen for the specific frequency of escaping water behind solid walls.
Injection of safe, inert gas into the system to identify microscopic leaks through floors and ceilings.
Detailed technical documentation provided to support your ‘Trace and Access’ insurance claims effectively.
Advanced non-destructive methods to find pipe failures beneath tiles or wood without lifting flooring.
Professional mapping of moisture levels to identify the root cause of persistent damp or mould.
Specialist equipment to locate bursts in the external underground pipework leading to your property.
Targeted inspections of internal walls and roofing voids to prevent costly water-related structural damage.
We provide honest, upfront pricing with no unexpected costs, ensuring you know exactly what to pay before any work begins. Every service is delivered by our qualified specialists and is backed by a 12-month guarantee for your total peace of mind.
We provide residential water leak detection services throughout Greater London and the surrounding counties.
City of London, Westminster, Camden, Islington, Hackney, Tower Hamlets, Southwark, Lambeth, Wandsworth, Hammersmith & Fulham, Kensington & Chelsea, Ealing, Hounslow, Richmond, Kingston, Merton, Sutton, Croydon, Bromley, Lewisham, Greenwich, Bexley, Havering, Barking & Dagenham, Newham, Waltham Forest, Redbridge, Haringey, Enfield, Barnet, Harrow, Brent, Hillingdon
Luton, Bedford, Dunstable, Leighton Buzzard
Chelmsford, Brentwood, Basildon, Harlow, Epping, Chigwell, Grays, Romford
Dartford, Sevenoaks, Tonbridge, Maidstone, Gravesham, Hertfordshire, Watford, St Albans, Hemel Hempstead, Hertford, Stevenage, Welwyn Garden City, Hatfield, Radlett, Borehamwood, Potters Bar
Guildford, Woking, Reigate, Epsom, Kingston upon Thames, Walton-on-Thames, Camberley, Farnham
Reading, Slough, Windsor, Bracknell, Maidenhead, Wokingham, Newbury
High Wycombe, Milton Keynes, Aylesbury, Amersham, Chesham, Beaconsfield, Marlow
Cambridge, Peterborough, Ely, Huntingdon, St Ives, Wisbech
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