Before & AfterIslington, N1
Underfloor Heating Leak
Thermal ImagingThermal imaging located a leak in screed underfloor heating. Exposed only the exact point - repaired same day.
Leak found in 35 minutes
Specialist Leak Detection
London's Non-Invasive
Leak Detection Experts
Advanced thermal imaging, acoustic detection, and tracer gas technology. We pinpoint hidden leaks across all 33 London boroughs without causing damage to your property. No find, no fee.
Call 0207 046 1363Contact Us
Tell us about your leak and we'll get back to you with a free, no-obligation quote within 15 minutes.
Accredited & Insured
TrustMarkGovernment-endorsed quality
Gas SafeRegistered gas engineers
CheckatradeVerified & reviewed
Which? TrustedTrusted Traders member
£5M InsuredPublic liability cover
Trading StandardsApproved contractor
What We Do
Specialist Leak Detection Services
Non-InvasiveSame-DayNo Find No Fee
Water Leak Detection
Unexplained damp patches, rising water bills, or the sound of running water? Our specialist equipment locates hidden leaks without damage to your property.
Thermal ImagingAcoustic ListeningTracer GasMoisture Mapping
Learn More
SpecialistAll Systems
Heating Leak Detection
Boiler losing pressure? Underfloor heating not performing? We pinpoint leaks in central heating, underfloor circuits, and radiator pipework.
Learn More
Insurance ApprovedDetailed Reports
Insurance Trace & Access
Full trace and access investigations with insurer-approved reports, thermal imaging evidence, and moisture readings. We liaise directly with your loss adjuster.
Learn More
Why Choose Us
Specialist vs General Plumber
Most plumbers guess where the leak is and start digging. We use advanced technology to find it first - saving you time, money, and your property.
The Old Way
General plumber approach
Dig up floors to find leaks
Days of disruption
Repair damage they caused
Our Way
Specialist leak detection
Thermal imaging pinpoints the exact spot
Detection done in hours
Zero property damage
0 hrs
Average Detection Time
0/7
Emergency Response
0%
Non-Invasive
0 yrs
In the Trade
Active Leak?
Every minute counts. Our detection team responds across London in under 60 minutes.
0207 046 1363Available 24/7, including weekends & bank holidays
Not Urgent?
Book a scheduled detection survey at a time that works for you.
Book OnlineNo obligation, free quotes
Three Simple Steps
How Our Leak Detection Works
01
You Call Us
Ring us or fill in the form. Describe what you're experiencing and we'll advise on the best approach - same-day visits available.
02
We Detect
A specialist arrives with thermal imaging, acoustic, and tracer gas equipment. We pinpoint the leak without unnecessary damage.
03
You Get a Report
You receive a clear report showing exactly where the leak is. We can repair it on the same visit in most cases, or provide a detailed quote.
Transparent Pricing
Clear Pricing, No Hidden Fees
We agree the price before any work begins. No surprises, no extras. Here's what London homeowners typically pay.
Service
Price
What's Included
Standard Leak Detection
From £195
Thermal imaging, acoustic detection, and moisture mapping. Fixed price agreed before we start
Heating Leak Detection
From £225
Central heating and underfloor heating systems. Pressure testing and thermal imaging included
Most Popular
Trace & Access (Insurance)
From £275
Full investigation with insurer-approved report, photos, and moisture readings
Mains Water Leak Detection
From £250
Acoustic and tracer gas methods to locate supply pipe leaks with minimal excavation
Moisture Mapping Survey
From £175
Comprehensive moisture survey with detailed report. Ideal for damp investigations
Emergency Leak Detection
From £295
24/7 emergency response. Same equipment and expertise, available any time day or night
No Find, No Fee Guarantee
If we can't locate the leak, you don't pay for the detection. Repair costs are quoted separately if needed. Many straightforward repairs can be completed on the same visit.
Average London leak detection: \u00a3300–\u00a3600. Our prices include the full report.
Case Studies
Recent Detection Jobs Across London
Real leak detection jobs, real results. Every case completed by our specialist team.
Before & After
Before & AfterCamden, NW1
Mains Water Leak
Acoustic DetectionAcoustic detection pinpointed a mains supply pipe leak under the front path. Repaired with minimal excavation.
Leak found in 40 minutes
Before & AfterWandsworth, SW18
Insurance Trace & Access
Trace & AccessFull trace and access investigation for an insurance claim. Leak found in concealed bathroom pipework behind tiles.
Leak found in 55 min
Before & AfterHackney, E8
Central Heating Leak
Tracer GasBoiler losing pressure daily. Tracer gas identified a micro-leak in a buried radiator pipe run.
Leak found in 25 min
Before & AfterKensington, W8
Bathroom Leak Detection
Thermal ImagingPersistent damp on ceiling below. Thermal imaging found a failed shower seal and slow waste pipe leak.
Leak found in 30 min
Before & AfterCity of London, EC2
Commercial Leak Survey
Multi-MethodMulti-floor office leak investigation using acoustic and thermal methods. Three leak points identified in one visit.
Leak found in 90 min
4.9
Rated by London homeowners across 33 boroughs
“Our water bill had tripled and we suspected an underfloor leak in our Victorian terrace. The engineer used acoustic listening equipment to trace the exact spot without lifting a single floorboard. The precision was remarkable....”
Sarah K.
Camden, London
“Needed a trace and access report for our home insurance claim. The engineer was thorough, professional, and the report he produced was accepted by our insurer without any questions. He explained every step of the...”
Priya M.
Islington, London
“We had a damp patch spreading across the ceiling and two plumbers had already failed to find the source. These specialists came with a thermal imaging camera, located a leaking pipe behind the bathroom wall...”
James H.
Westminster, London
Part of the Emergency Repairs London Group
Specialist Leak Detection Backed by London's Trusted Home Services Provider
Leak Detect London is the dedicated leak detection arm of Emergency Repairs London, one of the capital's top-rated 24/7 home services providers. For years we've been the first call for thousands of London homeowners and landlords dealing with hidden leaks, water damage, and rising damp.
We invested in the best leak detection technology available - thermal imaging cameras, acoustic listening equipment, tracer gas systems, and moisture mapping tools - so we can find leaks non-invasively and save our customers from unnecessary damage and cost.
Whether you're in Westminster or Wandsworth, Hackney or Hounslow, you get the backing of a company with a proven track record across hundreds of thousands of jobs.
4.9★
Customer Rating
From 1,200+ verified reviews
14+
Years in the trade
Established 2010
95%
First-visit detection rate
Non-invasive methods
33
London boroughs covered
Plus areas within the M25
Visit Emergency Repairs London
Our parent company - emergencyrepairslondon.co.uk
TrustMark ApprovedGas Safe RegisteredWhich? Trusted Traders£5M Insured
Free Quote
Get a No-Obligation Leak Detection Quote
Tell us what's happening and we'll come back to you with a clear price for the investigation. No pressure, no hidden fees. Or if it's urgent, just ring us. We pick up 24/7.
Prefer to talk? Call 0207 046 1363Free
No-obligation quotes
Same-Day
Appointments available
24/7
Emergency response
No Find
No fee guarantee
Service Area
All 33 London Boroughs Covered
Our leak detection specialists are based across London. We reach every borough listed below, and we also cover areas within the M25.
Not Sure If We Cover Your Area?
Give us a ring with your postcode. We cover more than what's listed and can usually confirm in seconds.
07456 975436Loading map...
All London Boroughs
WestminsterCamdenIslingtonHackneyTower HamletsSouthwarkLambethWandsworthHammersmith & FulhamKensington & ChelseaCity of LondonNewhamBarking & DagenhamRedbridgeHaveringWaltham ForestHaringeyEnfieldBarnetBrentEalingHounslowRichmond upon ThamesKingston upon ThamesMertonSuttonCroydonBromleyLewishamGreenwichBexleyHillingdonHarrow
Expert Guides
Practical advice from our London leak detection specialists.
Leak Detection
7 Warning Signs You Have a Hidden Water Leak in Your London Home
5 min read
How Thermal Imaging Finds Leaks Without Ripping Up Your Floors
Technology5 min
Insurance Trace & Access Claims: Everything London Homeowners Need to Know
Insurance6 min
Underfloor Heating Losing Pressure? How We Find the Leak
Heating6 min
Unexplained High Water Bill? It Could Be a Hidden Mains Leak
Guides6 min
Damp Patch on Your Wall or Ceiling? What to Do Before It Gets Worse
Emergency6 min
FAQ
Frequently Asked Questions
Got a question not answered here? Call us on 0207 046 1363 - we're available 24/7.