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

Fixed the problem and helped me with something else in the house that was not working!

Small leak behind toilet tube

£25

Great job quick and efficient

Leaking tap in the bathroom

£50

Amazing work !! fixed my leak and installed my new bidet. Quick work no time wasting and to point of fixture. Definitely will hire him again when needed. He definitely knew what he was doing. Thank you so so much

Stop a leak from my bidet pipe

£70

Amazing work, done quickly too. Thank you again.

Repair/replace leaky pipes

£150

Good communication throughout and showed me where the problem was. Polite and reliable would highly recommend.

Toilet is leaking

£75

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

£75 - £135

low

£75

median

£100

high

£135

Low, median and high bar chart distribuiton

Average reviews for Leak Detection Services in London

based on 595 reviews

4.94

571
18
3
1
2

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Recent Leak Detection tasks in London

Small leak in a garden building in SW19. Water enters only during rain

£150

South Wimbledon, Greater London

9th Sep 2026

its a vrick and slate outbuilding

Install undersink water filter in kitchen and fix bathroom tap drip

£150

Temple Fortune, Greater London

9th Sep 2026

Task 1 - install an undersink water filter in the kitchen ( the product is Doulton Kingfisher under sink water filter system. It might require changing the tap as well. ) Task 2 - the bathtub tap is currently dripping water after use. It sometimes drips water but sometimes doesn't

Replace toilet fill valve — small leak (fittings already tightened)

£75

Cann Hall, Greater London, E11

9th Sep 2026

There's a small leak coming from the toilet fill valve connection, where the flexible supply hose meets the base of the cistern (see photos). I've already tried tightening the fittings at both ends of the hose and that hasn't stopped the leak, so it's likely the fill valve itself needs replacing, or there's a worn washer/hose that needs swapping out. What I need: Confirm the exact source of the leak Replace the fill valve and/or supply hose as needed Test to confirm no more leaking after repair The toilet is a bit older, so there's a chance the tank may need to come off for full access — happy to discuss on site if so. Photos attached showing the leak area.

Chris helped replace a leaking toilet valve - would definitely recommend!

Bathroom sink pipe leaking

£60

Cann Hall, Greater London, E11

9th Sep 2026

The pipes under our bathroom sink are leaking a bit through these old fittings. Need to replace fittings and stop leak.

Fantastic - quickly fixed our issue on the same day.

Fix toilet leak

£60

Finsbury Park, Greater London, N4

8th Sep 2026

I need a leaking toilet fixed. Images attached. From the images let me know if are able to determine the issue and if you need a new specific part? You can see where I have attach some black tape to temporarily stop the leak. This has not held. If you need to facetime before, let me know.

Did a good job fixing our toilet, despite there being an additional issue which made moving it more difficult.

2 Bathroom taps leaking and plug problem

£75

Putney, Greater London, SW15

8th Sep 2026

2 Bathroom taps are slightly leaking and I think it's the cartridges that need changing after 6 years. I don't have the replacement cartridges but should be cheap to buy. I also have the plug not working properly and being inconsistent. This is what I found online about the Tap Tap Vado Notion Mixer NO T-1 0 9 FS /A- C /P ceramic cartridge CAR-K35B

Leak detection

£120

Putney, Greater London, SW15

7th Sep 2026

I need a leak detection service to confirm where a leak is coming from causing dampness and paint peeling. I believe it's from a pipe under the radiator. The damp patches have dried out now, but I need to find the exact root of this and repair whatever is the cause.

Leaky bathroom sink tap

£50

Notting Hill, Greater London, W11

7th Sep 2026

The bathroom sink tap is leaking and needs fixing

A seasoned expert, an absolute pleasure to work with. Took less than 40 minutes to get the job done, thank you!

Shower re-sealed due to leaking

£50

East Dulwich, Greater London, SE22

6th Sep 2026

My shower is leaking into my downstairs neighbours. A plumber has confirmed that it isn’t a plumbing issue so should just need to be re-sealed.

Alwyn was very helpful and nice to deal with

Fix leak urgent!

£50

St Luke's, Greater London

5th Sep 2026

Leak under kitchen sink! Lose pipe and can’t fit it back on !

Amazing! Thank you for helping me and such short notice.

Replace Leaking Kitchen Sink Waste Trap / P-Trap

£75

Bermondsey, Greater London, SE1

17th Aug 2026

I’m looking for a plumber to repair my kitchen sink waste pipe. The existing P-trap/U-bend has come apart and I haven’t been able to refit it correctly. I purchased what I thought was the correct replacement, but it appears the fittings/washers aren’t compatible with my existing pipework. Job required: * Assess the current waste pipe setup. * Supply any correct fittings/washers if needed. * Replace and fit a new P-trap/U-bend. * Ensure all joints are watertight and test for leaks before leaving. The sink is currently unusable as the waste pipe has come apart (see photos). Please let me know: * Your availability. * Whether you’ll bring any standard 40mm waste fittings that may be required. * Your total price including any small parts. Looking to have this fixed as soon as possible.

Great job and called out straight away to us - would highly recommend

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.