Diagnostic Drain Clearance
Blocked Toilet & Internal Drain Clearance London
A blocked toilet or internal drain is a critical failure requiring precise diagnosis to prevent recurrence and property damage. Our engineers approach every clearance not as a simple rodding job, but as a diagnostic investigation, using high-resolution CCTV drain survey technology from the outset.

This methodology allows us to classify defects according to industry-standard WRc coding, distinguishing between simple blockages, structural defects, installation faults, and root ingress. For landlords, commercial property managers, and parties in property transactions, this documented evidence is essential.
Our reports provide the technical substantiation required for insurance claims, Section 106 compliance, or pre-purchase due diligence, turning a reactive clearance into a proactive asset management event.
Pricing is structured based on the diagnostic and reporting service required. A fixed fee for standard clearance with a basic report is available, with survey-only and comprehensive reporting options quoted transparently beforehand.
What you get
- Initial clearance via high-pressure water jetting or electro-mechanical rodding, selected based on diagnostic assessment.
- Immediate post-clearance CCTV survey conducted to confirm flow restoration and identify the underlying cause.
- WRc-style defect classification in all written reports, providing a universal technical standard for contractors and insurers.
- Detailed survey reports include timestamped video footage and still images, geolocated for the drain run.
- Documentation tailored for landlord compliance records, commercial property logbooks, or conveyancing enquiries.
- Technical consultation on remedial options, from relining to excavation, based on the surveyed defect severity.
How it works
A method, not a guess
01
Diagnostic Dispatch
Upon arrival, our engineers conduct a preliminary assessment to determine the optimal clearance method and CCTV access point, prioritising minimal disruption.
02
Clearance & Verification
The blockage is cleared using specialist equipment. Flow is restored and immediately verified before the survey stage commences.
03
CCTV Survey & Coding
A full internal drain survey is performed. Defects are identified, measured, and coded according to WRc protocols for precise reporting.
04
Report Generation
You receive a comprehensive written report with defect coding, video evidence, and expert recommendations for any necessary remediation.
Questions
Blocked Toilets FAQs for London homeowners
Why is a CCTV survey necessary for a simple blocked toilet?
A blockage is often a symptom, not the cause. A CCTV survey provides documented evidence of the underlying issue—be it a collapsed pipe, root intrusion, or faulty installation—preventing repeat call-outs and justifying remedial works to landlords or freeholders.
What is WRc defect coding in your reports?
WRc coding is an industry-standard system for classifying drain and sewer defects. It provides an unambiguous, technical description (e.g., 'FN' for Fracture, 'DE' for Deformation') that is recognised by engineers, insurers, and solicitors, adding credibility to your documentation.
Can your report be used for a property transaction?
Yes. Our reports are routinely used in conveyancing to satisfy drainage enquiries (often part of Pre-Contract Enquiries). The objective, coded evidence can clarify liabilities and inform negotiations or price adjustments.
Do you service commercial properties and multi-tenant buildings?
Absolutely. Our diagnostic approach is designed for complex drainage systems in commercial premises, HMOs, and apartment blocks. We provide detailed asset records for compliance and planned maintenance schedules.
How quickly can you provide the written report after the job?
The diagnostic report, including coded defects and video links, is typically generated and dispatched via email within one working day of the site visit, ensuring you have prompt documentation for any follow-up actions.
Explore the cluster
Related drainage services & guides
Leak detection London
Hub page for multi-method surveys
Acoustic detection
Listen for pressurised pipe noise
Thermal imaging
Map wet and warm anomalies
Tracer gas
Find plastic-pipe and screed leaks
Underground leaks
Supply pipe and mains traces
Trace & access
Insurer-ready reports
Pricing
Fixed fees and no find no fee
Areas we cover
All 33 London boroughs
Leak detection guide
How methods compare
Insurance claims
Escape of water explained
London-wide
Blocked Toilets across all 33 boroughs
Same multi-method kit and fixed-fee approach from Barking to Richmond. Pick your borough for local housing detail.
People also book
Drain Clearance
Technical blocked drain clearance in London, led by CCTV survey & WRc-style defect classification.
Learn moreEmergency Call-Out
Emergency drainage call-out service for London, focused on precise CCTV survey diagnosis and WRc-style defect classification.
Learn moreJetting
London drainage engineers providing diagnostic high-pressure water jetting.
Learn moreWater going somewhere it shouldn't?
Tell us the symptoms and your postcode. We'll confirm the visit, the fixed detection fee and the arrival window before you commit to anything.
Book a detection visit