Moisture detector (moisture testing meter) against a wall with rising damp, reading high moisture content.
Moisture detector (moisture testing meter) against a wall with rising damp, reading high moisture content.

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4.0

Great rating - 4/5 (13330+ reviews)

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Recent Leak Detection reviews in London

Very responsive and helpful - thank you!

Fix and replace leaking pipe

£80

Anthony came at short notice on a Sunday. He managed to drain the leaking hot water tank at least, no spare parts so it’s not q. fixed but it’s made safe. Thank you!

Help drain (&/or Fix) leaking hot water tank

£80

Honest, reliable plumber/electrician. Identified our drainage/leak issue quickly and helped to rectify. Thanks man!

Check for leak / drainage problems

£70

Christopher was professional and punctual. He did a fantastic job in changing the bathroom tap.

Tap in bathroom leaking from top when used

£70

On time and did the job with no mess, and was very knowledgeable. Great communication.

I need 2 leaks fixed; U bend under my sink, also from my toilet

£90

He arrived on time and completed the job efficiently. Would recommend!

Leaking outside tap

£50

What's the average cost of a leak detector in London

£73 - £140

low

£73

median

£100

high

£140

Low, median and high bar chart distribuiton

Average reviews for Leak Detection Services in London

based on 578 reviews

4.94

554
18
3
1
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Recent Leak Detection tasks in London

Fix leak from my electric shower

£30

Royal Arsenal West, Greater London, SE18

12th Aug 2026

Fix leak from the electric shower

Excellent work! Very happy. Highly recommend.

Get concealed leak in washroom repaired

£300

Palmers Green, Greater London

12th Aug 2026

Attended the property following a report from the client that their neighbour had identified a damp patch on their wall and believed it may be caused by a leak from the client’s bathroom. The client requested non-invasive leak detection and trace-and-access investigation. I carried out an investigation within the bathroom, focusing on the area adjacent to the neighbour’s affected wall. A pressure test was carried out on the cold water supply system. The pressure dropped from 5 bar to 0 bar, indicating a loss of pressure and a potential leak on the cold water supply system. Thermal imaging was carried out within the bathroom, and elevated moisture readings were identified around the toilet area. An acoustic leak detection test was also carried out. Audible sounds consistent with running or dripping water were detected around the toilet and the shower spray area adjacent to the toilet. Based on the findings, the leak may be concealed behind the bathroom tiles. I advised the client that the tiles may need to be removed to gain access and expose the suspected leak. - need to get repaired

Fix leak under bathroom vanity

£150

Cowley, Greater London

10th Aug 2026

Hi, looking for an experienced local plumber in the Uxbridge / Hillingdon area. There’s an ongoing leak under the bathroom vanity unit that’s caused water staining and black mould on the wall, skirting board, and floor tiles in the corner. The unit is white with a white basin on top. We’ve stopped using this sink for now.Diagnose and fix the source of the leak (likely under the vanity – supply or waste pipes) Access under/behind the unit if needed (happy for the vanity to be carefully removed if required) Advise on the extent of the water damage and whether the vanity unit needs replacing Clean or treat the moulded areas if possible, or recommend next steps Photos/video available of the damage. Please only apply if you are Gas Safe registered (if any heating work is involved) and experienced with bathroom plumbing leaks. Looking for someone reliable who can come as soon as possible. Please include your availability, estimated cost, and any call-out fee in your offer.

Leak in pipe from boiler

£100

De Beauvoir Town, Greater London, N1

10th Aug 2026

small leak coming from uncapped pipe off boiler

great service. Prompt, on time, clear explanations of issues - steeped in integrity

Concealed leak in the washroom repaired and remove the tile

£150

Palmers Green, Greater London

10th Aug 2026

Attended the property following a report from the client that their neighbour had identified a damp patch on their wall and believed it may be caused by a leak from the client’s bathroom. The client requested non-invasive leak detection and trace-and-access investigation. I carried out an investigation within the bathroom, focusing on the area adjacent to the neighbour’s affected wall. A pressure test was carried out on the cold water supply system. The pressure dropped from 5 bar to 0 bar, indicating a loss of pressure and a potential leak on the cold water supply system. Thermal imaging was carried out within the bathroom, and elevated moisture readings were identified around the toilet area. An acoustic leak detection test was also carried out. Audible sounds consistent with running or dripping water were detected around the toilet and the shower spray area adjacent to the toilet. Based on the findings, the leak may be concealed behind the bathroom tiles. I advised the client that the tiles may need to be removed to gain access and expose the suspected leak.- This is the report and we want to get leak resolved- potentially not breaking the tile and also need a report from the plumber that the issue is resolved once done.

Pipe leak in downstairs toilet

£130

Kidbrooke, Greater London

9th Aug 2026

I have a pipe leaking in my downstairs toilet. The pipe is hidden by tiles (on the wall). Seems to come from the pipeline joint

Small leak under the sink in bathroom

£50

Becontree, Greater London

9th Aug 2026

There’s a drops of water leaking under the sink in the bathroom which needs re-sealing

Leak in the kitchen

£100

Chingford Green, Greater London

21st Jun 2026

Kitchen Leak Investigation and Repair Required I have a kitchen leak that is appearing between the laminate floorboards. The leak often occurs after the dishwasher has been running, particularly towards the end of the cycle when it is draining. I am looking for someone with plumbing experience to investigate the source of the leak and carry out any necessary repairs.

Yilnas did an excellent job. He quickly identified the source of the leak and repaired it efficiently. He was professional, polite, courteous, and clearly knew what he was doing. I would happily recommend him and would not hesitate to use his services again.

Plumber to repair leak

£120

Catford, Greater London, SE6

11th Jun 2026

Leak under kitchen sink. Water is pooling at bottom of cabinet but cannot locate leak

Stuart did an excellent job from start to finish. His communication was great, and he was extremely punctual, friendly, and professional throughout. He worked efficiently, quickly sourced the parts needed, and was careful in ensuring the dishwasher was fitted back correctly. I would definitely recommend Stuart and wouldn’t hesitate to book him again in the future.

Fix leaking bathroom tap. Probably needs a new washer

£30

Hounslow, Greater London, TW3

12th May 2026

Bath tap is leaking when fully closed

Lon arrived on time and quickly identified the problem. He was able to fix the issue without me needing to buy a new tap. Was polite and courteous. Would definitely recommend and will be using again.

Leakage on below side of toilet seat.

£50

Norbury, Greater London

24th Apr 2026

Its leakage on the below side of toilet seat Need plumber who can fix this Thanks

Amazing and efficient work

Plumber to I nvestigate leak from kitchen sink

£60

Balham, Greater London

11th Apr 2026

There is a slow leak coming from the kitchen sink which I don’t know how to fix and would like some help from a plumber.

Efficient, punctual and fixed the problem quickly.

Toilet is leaking

£150

Plaistow, Greater London, E13

6th Apr 2026

Toilet is leaking. It needs fixing Budget is for labour only and the materials will be provided depending on the problem

Friendly and did the job as required

Change Leaking Bathroom Tap - Thursday or Friday Please

£150

Downham, Greater London

11th Mar 2026

Simple change of a leaking tap in my tenants flat. Please buy this tap, https://www.screwfix.com/p/swirl-ola-chrome-152mm-standard-lever-mono-basin-mixer-tap-with-clicker-waste/2315p Please include the price of materials (the tap) as well in the price. Please also can you take a tape measure and let me know the dimensions of the main bedroom window, as I need to get a quote to replace it. The whole window area size please, from wall to wall, horizontal and vertical. Just need a simple measurement for a quote. Many thanks Paul

Fantastic Service, completed within hours of posting the job here.

Water leak check

£50

Leyton Marshes, Greater London

10th Mar 2026

I am looking for a professional plumber to visit my house and investigate a possible water issue. My property appears to be consuming around 64 litres of water per day, and I would like to check whether there is a hidden leak, faulty valve, toilet cistern problem, or any other plumbing issue causing unnecessary water usage. I would appreciate it if you could visit the property, inspect the plumbing system, and advise on the cause and possible repair. The property is located in Leyton (E10), East London. Please let me know: • Your call-out fee • Availability for a visit • Whether you can check the water meter and internal plumbing for leaks Would be able to provide paperwork work of your inspection Thank you.

Excellent work done

Plumber to fix toilet leak

£100

Wanstead, Greater London, E11

9th Mar 2026

The pipe to the toilet is leaking

Egzon was very efficient and quickly identified the cause of the leak from my toilet. He fixed the problem with a new flexi pipe and assured me he would call back if there were any further problems. I can recommend Egzon to other users of this app.

Fix leak in compression fitting for bath tub

£100

Alameda Place, Greater London

5th Mar 2026

Leaking compression fitting below bath tub. I tried to tighten it but mad either worse!

Great work, thank you Metin.

Leaking boiler

£80

Acton, Greater London, W3

20th Feb 2026

I have a boiler with 2 connecting pipes going into it. One of the pipes is leaking so just needs attention and tightening.

Punctual. Easy working with Stuart. Highly recommended

Fix leak from toilet

£80

Longlands, Greater London

19th Feb 2026

The toilet seat seems to be leaking in the back and it's damaging the toilet flooring.

Quick and efficient. I recommend