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

Very efficient and flexible with availability

Our bathtub leaks water through the ceiling

£150

Nasser is fantastic! He came out the same day and Fixed the problem in no time. Highly recommend and would use again. Thank you Nasser

Repair leaking Radiator. Possible damaged valve

£50

Colin did a great job on the sealing. Even gave us a lesson for the future which was great. Thank you

Fix leaking tap and reseal some tiling

£50

Very fast response, got the job done!

Fix leaking toilet

£160

Very helpful and tried to get to the root problem

Leaking diverter valve on shower needs fixing

£80

Excellent Guy to deal with.

Plumber for repairing leak under Kitchen Sink + Add TRV on Radiator

£100

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

£70 - £130

low

£70

median

£100

high

£130

Low, median and high bar chart distribuiton

Average reviews for Leak Detection Services in London

based on 457 reviews

4.92

432
18
3
2
2

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Recent Leak Detection tasks in London

Boiler filling loop valve leaking

£30

Peckham, Greater London, SE15

16th Oct 2025

Boiler filling loop valve leaks when open. Likely valve needs replacing. Qualified gas safe engineers only.

Radiator leaking - needs tightening

£100

Highams Park, Greater London, E4

16th Oct 2025

We removed our radiator to retrieve a toy - but now the radiator is slowly leaking water. I think it may need readjusting

Fixed our radiator next day - great job.

Toilet leaking underneath — water damage and possible mold

£300

Hampstead, Greater London, NW3

16th Oct 2025

My toilet is leaking water underneath the base and causing visible water damage, mold/mildew buildup, and cracked tiles around it (see attached photos). The leak looks like it’s coming from underneath or behind the toilet. I need a plumber to: Inspect and identify the exact source of the leak Repair or replace the wax seal/flange if needed Clean and reseal the area to prevent further damage Please include an estimate or hourly rate in your quote. I’m hoping to get this fixed as soon as possible to avoid more damage.

Fix a leaky kitchen tap

£100

Widmore, Greater London

15th Oct 2025

My kitchen tap is leaking, not from the faucet but from the hot tap lever.

Leaking tap seal

£100

Higham Hill, Greater London

15th Oct 2025

The kitchen tap is leaking from where the mixer tap arm joins the main stem. But only when it is in the "cold" position. I'm assuming a seal is loose or worn as this is the only place there is any water leaking from...

Boiler is leaking, small part might need replacing

£80

Leyton, Greater London, E10

15th Oct 2025

Our boiler (Potterton Promax System HE) is not working and the pressure is gone. We've tried adjusting the valves but they seem to be stiff or maybe stuck. On the brass connection on the braided metal hose underneath there is water dripping out slowly.

Fix 1st floor Toilet pipe leak causing mould on ground floor ceiling

£100

Stoneleigh, Surrey

15th Oct 2025

There seems to be a leak in the first-floor toilet, which is causing mould and damp on the ground-floor ceiling directly below it. Please see the attached picture for reference. Could you please provide a reasonable quote for identifying and fixing the leak, as well as repairing the affected ceiling area?

Stop a leaking tap in my kitchen. I think it only needs a new washer

£40

Upper Edmonton, Greater London

14th Oct 2025

Stop the leaking tap from leaking and bring necessary tools ie washer etc

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.

Take out my toilet and find the leak and fix it!

£150

Shacklewell, Greater London

28th Jul 2025

Take out my toilet find leak and fix it! We may need to buy and fit a new toilet, we may not. We will need to cut some plywood (supplied) to fix the floor for sure!

Ibukun came a bit late but was very professional, knowledgable and happy to do the work as agreed for the fee without argument or anything difficult. We would definitely use him again!

Its leaking water from the tube and that needs to be fixed.

£100

Earl's Court, Greater London

5th Jul 2025

The tube below the sink is leaking water and needs to be fixed.

Fantastic, ponctual and very kind

Fix ceiling water damage (water leak solved)

£150

Anerley, Greater London

13th Jun 2025

I need someone to fix my downstair neighbour's bathroom ceiling. There is some minor damage caused due to a single incident of a tap in my bathroom that was left open for a short period of time. It's a small hole in their celing, photos attached. We can confirm that this is not an issue that also requires input from a plumber. Please send your quotes

Brilliant! Thank you so much Jason

Replace leaking shower hose and head

£25

Bostall Heath, Greater London

2nd Jun 2025

Shower hose is leaking. Needs replacement

Excellent. Sorted my shower issue super fast

Leaking toilet

£100

Battersea, Greater London, SW11

2nd Jun 2025

The floater in the toilet cistern isn’t lifting properly which is causing a leak, in the porcelain toilet itself, we need someone to come and fix this and replace it. It could also be a gasket that needs replacing

Did many hours for us and still kept price. Great job!