Diagnostic Drain Clearance
Blocked Drain Clearance London
Our London drain clearance service is founded on a technical, diagnostic methodology. We do not simply clear blockages; we identify and document the underlying cause using industry-standard CCTV survey equipment.

Every clearance operation is an opportunity to gather definitive evidence of the drainage system's condition. This procedural approach is critical for commercial clients, landlords, and informed homeowners managing asset integrity and liability.
Our reports provide the clarity needed for insurance submissions, Building Regulations (Part H) compliance, and informed decision-making during property transactions. We classify defects using WRc-Adopted standards to ensure technical precision.
Pricing is structured based on the diagnostic survey findings and the required clearance methodology. A fixed-price quotation is provided following the initial CCTV inspection, with no hidden charges.
What you get
- Initial CCTV survey to diagnose blockage cause and locate defects
- WRc-Adopted defect classification codes (e.g., FN, BR, DS) in all documentation
- High-pressure water jetting (up to 3000 PSI) for clearance, preserving pipe integrity
- Post-clearance CCTV verification to confirm system restoration
- Comprehensive written report with still images, defect log, and recommendations
- Documentation formatted for use in insurance claims and property enquiries
How it works
A method, not a guess
01
Diagnostic CCTV Survey
We deploy a push-rod or crawler CCTV camera to visually inspect the drain run, identifying the blockage location, nature, and any contributing defects before any clearance work begins.
02
Defect Classification & Reporting
Observed defects are logged and classified according to WRc-Adopted codes. A preliminary report is generated, detailing the system's condition and proposed clearance method.
03
Precision Clearance
Using high-pressure water jetting or electro-mechanical cleaning, our engineers clear the obstruction. The method is chosen based on the diagnosed cause to avoid damaging the existing pipework.
04
Verification & Final Documentation
A post-clearance CCTV survey verifies the drain is fully operational. The final report, including before/after evidence, is issued for your records and any third-party requirements.
Questions
Drain Clearance FAQs for London homeowners
Why is a CCTV survey necessary for a simple blocked drain?
A CCTV survey provides a definitive diagnosis, distinguishing between a simple blockage and a symptom of a structural defect like a fracture or root intrusion. This documented evidence is essential for accurate repair planning and for fulfilling disclosure obligations in property transactions.
What does WRc defect classification mean in your reports?
WRc-Adopted codes are an industry-standard system for categorising drainage defects (e.g., 'BR' for broken pipe, 'DS' for displaced joint). Using this terminology ensures precise, unambiguous communication of the pipe's condition to surveyors, insurers, and conveyancers.
Can your report be used for an insurance claim?
Yes. Our reports are specifically compiled to support insurance claims. They include time-stamped CCTV footage, still images with defect codes, and a written assessment that establishes the cause, extent, and recommended remediation, providing the robust evidence insurers require.
Do you serve commercial and rental properties?
Absolutely. Our diagnostic approach is designed for property managers and landlords who require documented proof of drainage condition for maintenance schedules, tenant disputes, and compliance with their legal obligations under the Landlord and Tenant Act.
What areas of London do you cover?
Our diagnostic drain clearance service operates across Greater London, including areas with complex Victorian infrastructure like Islington and Kensington, as well as commercial estates in Docklands and newer developments requiring precise condition reports.
Read before you book
Drain Clearance guides
Signs of a Blocked Drain at Home: What Each Symptom Tells You
Slow drainage, gurgling, bad smells and water rising in one fixture when another drains are the main signs of a blocked drain. Each one narrows down where the blockage sits.
ReadDrain Clearance Methods Explained: Rodding, Suction and Water Jets
Our engineers detail the core methods of professional drain clearance, explaining how we use CCTV surveys to diagnose blockages and select the most effective clearance technique.
ReadBlocked Sewer or Your Own Drain? How to Tell Who Clears It
Whether a blockage sits in your private drain or in the public sewer decides who clears it and who pays. You can often tell which in a few minutes by lifting the right manhole covers. Here is how the check works.
ReadShould a Drain Be Jetted Before a CCTV Survey?
Most condition surveys need a clean pipe, because a camera cannot see through grease, silt or standing water. But for a suspected collapse, a pre-purchase survey or an insurance claim, the camera should go in first. Here is how to decide the order.
ReadExplore the cluster
Related drainage services & guides
High-pressure jetting
Grease, silt and debris cleared
CCTV drain survey
Camera diagnosis, written report
No-dig relining
Repairs a pipe without excavation
Root cutting
Root ingress cleared same visit
Emergency drainage
Urgent response, clear pricing
Pricing
Published rates by job type and time band
Areas we cover
All 33 London boroughs
Drainage guide
The complete guide to London drainage
Insurance claims
CCTV documentation for claims
London-wide
Drain Clearance across all 33 boroughs
Same multi-method kit and fixed-fee approach from Barking to Richmond. Pick your borough for local housing detail.
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Learn moreNeed to know what the drain is actually doing?
Tell us the symptoms and your postcode. We confirm what the survey covers and what the written report will contain before you commit to anything.
Book a drain survey