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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4.3

Excellent rating - 4.3/5 (9300+ reviews)

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Recent Leak Detection reviews in London

Top man! Highly recommended. Super friendly and was able to help fix my espresso machine

Smeg ECF01 Espresso Machine leaking milk frother fix / refurbishment

£45

Excellent. Quick response. Arrived on agreed time and completed the work very professionally. will recommend to anyone needing any work done.

Leak from base of toilet

£100

Amin has been incredibly helpful and professional in identifying the problem and proposing a solution. He helped me to source missing parts of the repair, which was efficient and transparent. Thank you Amin, we will stay in touch!

Fix leaking flush

£50

Great Airtasker. Punctual, fixed the issue with no delays. Would recommend for sure.

Fox a leaking toilet cistern

£100

Very fast response, got the job done!

Fix leaking toilet

£160

Amin’s work was extremely efficient and finished to a very high quality - would definitely recommend his services

Leak behind toilet needs fixing

£80

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

£70 - £135

low

£70

median

£100

high

£135

Low, median and high bar chart distribuiton

Average reviews for Leak Detection Services in London

based on 482 reviews

4.92

457
18
3
2
2

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Recent Leak Detection tasks in London

Fix the leakage in the kitchen sink

£30

Creekmouth, Greater London

27th Dec 2025

The water is leaking from the pipe connection under the skin in the kitchen area. This needs to be fixed please.

Benny has literally done a great job. He fixed my kitchen sink leakage spending 1:30 hr without hesitation. He made it. Such a nice person. I will definitely recommend him to get the job done. Thanks Benny

Bathroom leak

£60

Canning Town, Greater London, E16

26th Dec 2025

Bathroom leak needs fixing

External waste pipe leak – investigate & repair/replace

£300

Clapham Junction, Greater London, SW11

23rd Dec 2025

Property / access • First-floor, split-level flat in a terraced house (leasehold), London SW11 area. • Issue appears related to waste/drainage (kitchen waste) rather than rainwater. • Access likely needed via small balcony/ledge outside the kitchen window. • please come with suitable access equipment (e.g., ladders/step ladders, and if needed a small access tower). Problem description • When the kitchen tap is running (and likely when dishwasher/washing machine discharge runs as they connect to the same waste), water leaks out from the soffit/eaves above the front door / porch area. • The leak stops immediately when we stop running water. • The under-sink cabinet is dry and visible pipework under the sink looks OK, so the issue is likely behind the units / within a wall or floor void / or an external waste pipe connection. • A plumber has suggested it’s not a blockage, but more likely a burst/split external metal waste pipe near/behind the small balcony/ledge outside the kitchen window. What we need 1. Investigate and confirm the source of the leak (trace the waste run from kitchen to outside / downpipe / connections). 2. Repair or replace the damaged section of waste pipework (likely external metal section or joint). 3. Test by running kitchen water/discharge after repair to confirm no further leak. 4. Please advise if any making good is required (minor sealing/patching), and what is included/excluded. Requirements (please read) • Must be experienced in waste pipe leaks / external pipework repairs (not just tap/sink swaps). • Please come prepared for investigation: • Basic leak tracing and pipework tools • If you think helpful: CCTV drain inspection capability (nice-to-have, not essential) • Please bring suitable access equipment (as above).

Leaking sink trap

£40

Colindale, Greater London, NW9

23rd Dec 2025

There is a really bad smell coming from my bathroom, i think this is something to do with a leaking sink trap

Fix damaged sink draw and leaking

£60

Stoke Newington, Greater London, N16

22nd Dec 2025

A plumber recently changed the plug for a new one (great, no problem there) but in doing so damaged the draw (it no longer closes properly and you can see in the photo it doesn't sit flush with the other draw underneath it) and there is also water leaking into the draw. Here you can see a short video: https://drive.google.com/file/d/1uaAPBWnK3106LNoYszr5WXjnVgN5l0-i/view?usp=sharing We would need someone to come January 2nd or 5th onwards, thank you.

Fix a Radiator leak

£80

Lower Edmonton, Greater London

22nd Dec 2025

Bathroom radiator valve leaking - so I think it's probably a valve replacement job.

Just a lovely friendly and helpful guy who gets the job done - even when he hits an unexpected hitch, which he did with my job. Just couldn't fault him on anything, so highly recommended.

Sink leaking plumber needed

£50

Turnpike Lane, Greater London

21st Dec 2025

Our sink is linking, the sealant has become loose and needs repairing.

Great work, will be using again!

Leaking toilet cistern

£50

Cyprus, Greater London

20th Dec 2025

The toilet water cistern keeps refilling because the water keeps leaking into the toilet bowl. We changed the valve part, but that didn't help

Sink is leaking from waste pipe.

£50

South Norwood, Greater London, SE25

20th Dec 2025

Waste pipe is leaking under sink .

Fix pipe leakage under sink

£60

Brownswood Park, Greater London, N4

16th Dec 2025

I dismantled the pipes under my sink after fitting everything back together there is a leak. Specifically the leak is between the top of the ubend and the exit pipe. The problem is that the end of the ubend has a screw nut and the exit pipe is just a flat pipe so the connection isn’t tight enough

Yilmaz clearly knows what he’s doing!

Toilet flush leak

£50

Lower Holloway, Greater London, N7

17th Nov 2025

Toilet cistern needs maintenance (it’s a bit rusty), also flush keeps dripping and needs to be stopped

Punctual, reliable and kind

Leak from toilet affecting floor. Needs to be stopped.

£10

South Harrow, Greater London, HA2

28th Oct 2025

Leak from our flat going downstairs. Needs to be found and fixed.

Excellent investigative work from Troy. He turned up quickly , diagnosed the issue and communicated promptly.

Fix a leaking bottle trap

£80

Acton Green, Greater London, W4

24th Oct 2025

Need a leaking bottle trap under sink fixed. Reattach or replace. Very short on space

Really happy I found Silva. He’s clearly very talented and skilled. What was thought to be a simple task of replacing a bottle trap, turned into a complicated job because of the structure and placement of my pipe work. Silva went the extra mile to disconnect and re attach the pipe and guided me on what he thought was best & not the easiest for him. Really pleased I’ve found him!! I’ve already booked him in for more work. Highly recommend!!

Fix bathroom leak

£50

Poplar, Greater London

11th Oct 2025

Leak in my bathroom create leak on roof of flat below. Need an experienced company to have a look, inspect the work and provide a quotation

Great work, thanks for everything

Fix a leaking isolation valve under kitchen sink

£80

Acton Green, Greater London, W4

30th Sep 2025

Fix a leaking isolation valve under kitchen sink

Saleem was incredible. A true hard-worker. He went back & forth to make sure the leak was fixed. No complaints. Thank you Saleem

Bathroom Tap Replacement & U-Bend Leak fix

£100

Haggerston, Greater London, E2

27th Aug 2025

The ceramic discs in my old basin taps are broken and won’t stop dripping. Want to replace with new pair purchased online. There is also a slow dripping leak from the ubend behind the sink so I think this will need to be replaced too. I can either purchase or you can supply the ubend. Plumbers preferred.

Michael arrived on time and completed the task very quickly ! Lovely guy and nice to meet you. Thank you Michael !

Repair leak at back of bath - hot tap isolator valve is leaking

£150

Tower Gardens, Greater London, N17

26th Aug 2025

Leak is coming from the red isolator valve at back of the bath. Needs replacing and we need a check that the leak isn’t coming from anywhere else. Female plumbers to the front! All offers welcome of course.

Quick, professional, easy - loved his work. He used his knowledge to not only do as we asked, but went further to ensure no more leaks. Brand new valves - thanks!

Fix leaking tap

£50

Nine Elms, Greater London, SW8

25th Aug 2025

Leaking tap in the kitchen

Punctual. Effective communication. Good worker.

Small leak behind toilet tube

£25

Brompton, Greater London

18th Aug 2025

I noticed a small leak (a drop every 30 seconds or so) where the tube of the toilet meets the wall, see photo below.

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

Replace 2 leaking taps with new

£50

Castelnau, Greater London

13th Aug 2025

Replace 2 leaking taps with new

Excellent plumber. Efficient and friendly.