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.

Find a professional leak detection service in London

Fill in a short form and get free quotes for professional leak detection services

4.0

Great rating - 4/5 (13330+ reviews)

Having trouble finding that leak?

  • Thermal imaging leak detection
  • Gas leak detection
  • Water leak detection
  • Non-invasive leak detection
  • ...or anything else.
It only takes 2 minutes. And it's free.
Up to 50% cheaper than franchise dealers
No job too big or small
Free insurance coverage
Secure cashless payments
Same day or next day service at no extra cost

Best rated leak detectors near me

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

It took longer than expected, however, Rashid went all the way beyond to make sure job completed to my and his own satisfaction. Would highly recommend this hardworking and very responsible man if you need someone reliable and helpful.

Fix leaking water - Experienced Plumber required.

£80

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

Leak behind toilet needs fixing

£80

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

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

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 487 reviews

4.92

460
20
3
2
2

What is Airtasker?

Post your task

Post your task

Tell us what you need, it's FREE to post.

Review offers

Review offers

Get offers from trusted Taskers and view profiles.

Get it done

Get it done

Choose the right person for your task and get it done.

687+

Tasks successfully completed

3

Average amount of offers per task

16

 mins

Average time to receive offers

Statistics from the most recent tasks on Airtasker over the last 4 years.

Recent Leak Detection tasks in London

Fit washing machine, new tap and shower, leak proof bath

£200

East Dulwich, Greater London, SE22

3rd Jan 2026

We have just moved into a flat that needs a full refurb but would like a few jobs completed to make living a bit more comfortable in the short term. We have a washing machine but needs to be installed - both plumbing and electrics, hopefully under the sink (see pictures) the bathroom sink tap leaks which we would like fixing /replacing and we would like a temporary new shower fitting installed and a quick fix to make it leak proof where damage has been caused from an existing leak. Doesn’t need to be perfect jobs, just temporary fixes as will all be replaced when the full refurb starts

Fix a shower tray leak

£180

Brentford End, Greater London

3rd Jan 2026

We have a leak developing in the ceiling under the upstairs shower. The leak needs to be investigated and fixed.

I heed plumber to repair a leak in my toilet

£90

St Johns, Greater London, SE8

3rd Jan 2026

A leak has been identified in my toilet so need it repaired.

Plumber: trace leak in study + under-sink leak + new taps

£800

Norwood Green, Greater London, UB2

3rd Jan 2026

1) Trace and repair leak in ground floor study. •Damp staining showing in the ceiling corner of the study •Behind that corner is a boxed-in black soil/waste stack (serves en suite + family bathroom above) •Leak seems intermittent, possibly after bath draining and/or toilet flush 2) Kitchen: intermittent leak under sink + tidy pipework •Under-sink waste leaks only when the sink is blocked/full and water is sitting in the pipework •Pipework looks messy and I want it re-done properly with new seals/fittings as needed •Please diagnose where it’s leaking, re-plumb and test 3) Kitchen: replace under-sink hot water boiler + replace kitchen tap •Existing under-sink hot water boiler/heater unit (black box) has failed •I will buy a replacement unit and a new boiling water tap •Please remove old unit, install new unit, connect and commission. 4) Family bathroom: replace basin tap + reseal •Existing waterfall tap splashes/drips backwards so the back ledge is always wet •Replace tap (I will supply) •Re-silicone/reseal behind tap / along edge where needed 5) Master en suite: replace shower control panel + handheld hose/wand •Replace shower mixer/control panel (3 control knobs) and handheld shower set (I will supply) •Fit like-for-like where possible, check for leaks and test thoroughly

Fix leaky toilet

£300

Crofton Park, Greater London

3rd Jan 2026

Our toilet has a small leak which when flushed is pooling under tiles. We'd ideally like to lose as few tiles as possible in the repair.

Flush leaking

£80

Dollis Hill, Greater London

3rd Jan 2026

Flush leaking, it needs fixing. System not letting upload video, I can share on what’s app.

We need a leaking gutter repairing.

£150

Edmonton, Greater London

3rd Jan 2026

Gutter is leaking through one of the joints. Looks like the connection has come lose and will probably need sealing as well. We don't have a long ladder so you will need your own.

Leak from toilet (concealed cistern)

£80

Mill Meads, Greater London

2nd Jan 2026

We have a toilet leak from the concealed cistern toilet into the floor that recently started in the cold weather. It is very slow consistent and the flow is not changing with flushing please check pictures. We suspect that could be condensation.

Did as promised 👍 toilet leak issue solved

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!

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.