Blocked drains are one of the most common plumbing problems in London, but they are also one of the most damaging when ignored. As professional drainage and leak detection experts, we respond to hundreds of drainage emergency London cases across the city every year. From overflowing blocked toilets London and blocked sinks to flooded gardens and collapsed drains, no two cases are the same.
In this blog, we explain why drains get blocked, how to identify the early warning signs, and how expert leak detection specialists in London diagnose and fix the problem using advanced technology.
Whether you own a residential property, commercial building, or rental unit, this guide will help you understand how to keep your drainage system flowing properly and when to call for specialist help.
Why do Drains in London Block So Easily
London has some of the oldest drainage systems in the UK. Many properties still rely on ageing clay pipes or outdated layouts that were never designed to handle modern waste. This makes blocked drains London a frequent issue for homeowners and businesses alike.
1. Grease, Fat & Food Waste
Kitchen drains are heavily affected by FOG (fat, oil, and grease). These substances harden inside pipes and create stubborn blockages that restrict the flow of wastewater. Severe buildup can even form fatbergs, requiring professional fatberg removal London.
2. Hair, Soap & Product Build-Up
A mixture of hair, conditioner, shaving foam, and soap forms thick clumps inside bathroom drains. This is a major cause of slow-draining showers, baths, and basins, which is why many residents call bathroom drainage specialists to fix a blocked shower drain London.
3. Wipes, Tissues & Sanitary Products
Wet wipes and hygiene products do not break down even when labelled as “flushable.” These items often get stuck in bends and joints, causing severe blockages. If left untreated, you may require emergency toilet unblocking for a blocked toilet.
4. Structural Drain Damage
Some blockages are caused by the pipe itself rather than its contents. Collapsed drains, cracks, misaligned joints, or disconnected sections all need professional inspection. This is where a CCTV drain survey London helps identify the problem, and any damaged sections can be repaired with collapsed drain repair London.
5. Tree Root Intrusion
Tree roots naturally seek moisture and can penetrate underground pipes, leading to repeated blockages or leaks. External drains may become obstructed, requiring experts in root ingress London and external drain blockage to restore full flow.
Warning Signs You May Have a Blocked Drain
If you notice any of the following, your drains may already be partially blocked:
- Slow drainage in sinks or baths
- Gurgling noises from pipes
- Bad smells from drains
- Water is backing up into sinks or toilets.
- Overflowing external drains
- Localised damp or unexplained wet patches
These early signs often indicate a drainage emergency London, and it’s best to contact leak detection specialists London before the problem worsens.
How Drainage & Leak Detection Experts Fix Blocked Drains
Professional engineers use advanced equipment to diagnose and clear blockages safely and efficiently.
1. High-Pressure Drain Jetting
High-pressure jetting removes heavy deposits, wipes, fat build-up, scale, and roots, quickly restoring your drainage system to full flow. This service is ideal for drain jetting London or emergency drain unblocking London situations.
2. CCTV Drain Survey
A high-resolution camera is inserted into the drainage system to locate the exact cause of the problem. CCTV drain surveys reveal structural defects, hidden blockages, misaligned or cracked pipes, root intrusion, and repeated problem areas. This ensures accurate diagnosis with no guesswork.
Why Choose Our Drainage & Leak Detection Experts in London
24/7 emergency response
Full London coverage: East, West, North, South & Greater London
High-pressure jetting on all callouts
Advanced leak detection equipment
Highly experienced drainage engineers
Accurate CCTV drain survey London with reports & videos
Competitive pricing with no hidden fees