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Drain Unblocker London
Professional drainage engineers attending a blocked drain in London

Drainage Investigation in London

Detailed investigation to identify the cause of drainage problems in London properties.

  • All 32 London boroughs covered
  • Drain unblocking, jetting and repairs
  • Specialists in Victorian clay drainage
  • CCTV drain surveys and reports
32 Boroughs covered
CCTV Drain surveys
Jetting High-pressure drain cleaning

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Drainage Investigation across London

A drainage investigation survey finds the cause of drain problems that keep coming back. Perhaps you have repeat blockages, odd smells or slow drains with no clear reason. Rodding and chemicals cannot answer that question, but a CCTV survey can.

The survey gives you stills and HD video. You can share them with insurers, Thames Water or a freeholder to back up a claim or a repair request. We survey from every reachable point, map the layout and grade each defect to WRCm.

An investigation often finds a second fault that explains why earlier clearing failed. You then get one clear diagnosis and a costed repair plan, instead of paying for jetting every six months. Once the fault is repaired or relined, blockages from that cause should stop.

Some faults lie in a Thames Water pipe. In that case, we produce reports to the standard the water company expects. We also give you evidence to help you ask them to make the repair.

A survey also saves money over time. Clearing the same blockage again and again adds up, while one clear diagnosis ends the cycle. Because you see the footage yourself, you can check every finding. Nothing is hidden or left to guesswork.

Signs you need drainage investigation help

  • ✓ Recurring drain blockages despite repeated clearance
  • ✓ Unexplained sewage smell inside the property
  • ✓ Multiple drains slow simultaneously with no obvious cause
  • ✓ Need to establish Thames Water vs. homeowner responsibility
  • ✓ Insurance claim requiring drain condition evidence

Our process

  1. 1. Discuss symptoms to determine the best survey approach
  2. 2. Access drain from all available points
  3. 3. Camera survey of all suspect drain runs
  4. 4. Fault analysis and defect classification
  5. 5. Written report with recommendations and, if needed, Thames Water escalation support

Pricing guide

Prices vary because every job differs. Investigation surveys depend on the system. A standard home costs less than a job with several drain runs, hard access or a large network. Request a quote online.

Drainage Investigation — frequently asked questions

Can a CCTV survey prove the blockage is Thames Water's responsibility?

Yes, it can. A survey that finds and records a defect in a Thames Water pipe gives you the evidence to ask them for repairs. We write the report to the standard they accept, and we can advise you on the next steps.

Nearby locations

Drainage Investigation in London Drainage Investigation in Hackney Drainage Investigation in Islington Drainage Investigation in Camden Drainage Investigation in Southwark Drainage Investigation in Tower Hamlets Drainage Investigation in Lambeth Drainage Investigation in Wandsworth Drainage Investigation in Hammersmith Drainage Investigation in Kensington Drainage Investigation in Westminster Drainage Investigation in Lewisham Drainage Investigation in Greenwich Drainage Investigation in Bromley Drainage Investigation in Croydon Drainage Investigation in Barnet Drainage Investigation in Enfield Drainage Investigation in Haringey Drainage Investigation in Ealing Drainage Investigation in Brent Drainage Investigation in Canary Wharf Drainage Investigation in Fulham Drainage Investigation in Central London Drainage Investigation in Kingston upon Thames Drainage Investigation in Edgware Drainage Investigation in Battersea Drainage Investigation in Catford Drainage Investigation in Beckenham Drainage Investigation in Sidcup Drainage Investigation in Chislehurst

While you plan the work, read our guide Lost Rivers Under Lambeth & Southwark: Drain Smells. It covers what to check before you ask for a quote.

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