Blocked drains
Clearing internal or external drainage blockages through suitable access points.
Drainage Specialists London
Find drainage specialists in London
Blocked drain, recurring smell, backing-up water or suspected pipe damage in London? Describe the symptoms once, then compare drainage specialists who cover your area.
Genuine verified customer reviews
Up to 3 local responses
You choose who to hire
Looking for a drainage specialist near you in London?
Enter the postcode and explain which fixtures, gullies or manholes are affected, whether the issue is constant or intermittent and whether neighbouring properties have the same problem. That helps London specialists judge whether clearance, CCTV or a wider network check is needed.
Common drainage specialist services
What can drainage specialists in London help with?
Choose a professional whose experience matches the scale and practical requirements of your job.
Drain jetting
High-pressure water jetting where appropriate to remove deposits and restore flow.
CCTV drain surveys
Camera inspection to identify roots, displaced joints, damage or recurring obstructions.
Drain repairs
Repair of damaged private pipework once the defect location and ownership responsibility are established.
Surface-water drainage
Investigation of private gullies, soakaways and runoff problems around homes and hard surfaces.
Emergency drainage
Urgent clearance or containment for serious backups and overflowing private drains.
How much does drainage work cost?
Diagnosis and clearance can be separate from repair. Current 2026 UK guidance gives these broad examples:
£80–£100Drain-cleaning guide
£80–£145Drain rodding
£70–£175Drain jetting
~£250Average CCTV survey
Indicative UK guidance checked August 2026 from MyJobQuote. London prices vary with emergency timing, access, jetting, camera/report requirements, excavation and whether the affected pipe is private or public.
Compare like for like
Establish cause and ownership before major repair
A recurring blockage may sit in private drainage or in a public sewer. Do not authorise excavation until the defect and responsibility are reasonably clear.
- Say which drains or fixtures back up and whether the problem is intermittent.
- Mention neighbours being affected and any previous clearance work.
- Ask how call-out, jetting, CCTV and written reports are charged.
- Check whether United Utilities or the property owner is responsible before major repair.
Cost sources: MyJobQuote 2026 drain clearance cost guide · MyJobQuote 2026 drain survey cost guide
London drainage context
Surface-water risk and pipe ownership both matter before major drainage work
London's dense, heavily paved environment can overload drainage during intense rain, while the legal responsibility for a pipe can change along its route.
Almost 320,000 London properties are at high risk of surface-water flooding
The London Surface Water Strategy says almost 320,000 properties — around one in 13 — are at high risk of surface-water flooding. It also notes that impermeable surfaces and London's clay soils can slow infiltration. If a drainage problem appears mainly during heavy rain, the cause may be wider than a simple household blockage.
Thames Water does not own every drain inside a property boundary
Thames Water's current service code explains that property owners are responsible for private drains within their property that did not transfer to the water company, while Thames Water is responsible for many public and transferred sewers. Establishing the boundary matters before paying for a major repair.
Local to London
Drainage Specialists covering London
Drainage firms may cover London by postcode and emergency rota. Example areas include:
CamdenIslingtonHackneyGreenwichWandsworthEalingCroydonBarnet
Tell the specialist whether neighbours are affected
If several flats or nearby properties back up at the same time, that can point to a shared or public network issue rather than a defect entirely within one private drain.
Diagnose before excavating. CCTV or clear evidence of the defect can prevent unnecessary repair and help establish who is responsible.
How it works
Describe the drainage symptoms once, then compare London specialists
Where the water appears, when it happens and whether it recurs all help narrow the likely cause.
Explain the symptoms
Add the postcode, affected drains, timing, overflows, smells and previous work.
Hear from suitable specialists
Up to three interested London drainage professionals can respond.
Compare diagnosis and next step
Check reviews and distinguish clearance, CCTV, reporting and repair in each quote.
Before you hire
What should you check before hiring a drainage specialist?
For recurring problems, understanding the cause and ownership is more important than repeatedly clearing the same blockage.
Ask for the diagnosis
Request evidence of where and why the drain is failing before a major repair is proposed.
Separate charging stages
Clarify call-out, rodding, jetting, CCTV, reports and repairs as separate items.
Check responsibility
Establish whether the pipe is private or part of the public sewer network before authorising excavation.
Questions
Drainage Specialists in London: common questions
Useful answers before you post the job.
How much does it cost to unblock a drain in London?
MyJobQuote's current guide gives roughly £80–£100 for drain cleaning, £80–£145 for rodding and £70–£175 for jetting as broad UK figures. Emergency attendance can cost more.
When is a CCTV drain survey useful?
It is especially useful for recurring blockages, suspected damage, roots or when evidence is needed before a repair. MyJobQuote's current average survey guide is around £250.
Who is responsible for a drain in London?
It depends on the pipe. Private drains within the property may be the owner's responsibility, while Thames Water is responsible for many public and transferred sewers. Establish the actual boundary before major work.
Could heavy rain be the reason my drain backs up?
Yes. London's Surface Water Strategy identifies major surface-water flood risk, so problems that occur specifically during intense rain may involve capacity or surface-water issues as well as local blockages.
Do I have to hire a drainage specialist who responds?
No. Up to three interested local professionals can respond and there is no obligation to hire.
Ready to compare drainage specialists in London?
Describe the blockage or drainage symptoms once, then compare interested London drainage specialists and their proposed next steps.
More local specialists
Explore services in London
Browse Local Trades service pages available for London.