Trusted Drainage Contractors in London for Every Type of Project
Choosing the right drainage contractors in London is critical. Poor drainage causes structural damage, flooding, and costly delays. At WJB Ground Works, we solve that problem.
We deliver end-to-end drainage solutions across Greater London. Our systems are engineered to prevent water accumulation, eliminate soil erosion, and protect foundations on both residential and commercial sites. We have been doing this since 2014.
As a fully integrated groundworks service company, we don’t just install drains. We design, build, and verify drainage systems that perform for decades. One team. Complete accountability from start to finish.
Need trusted drainage contractors in London? Contact us for a site assessment.
Get a Free QuoteOur drainage services include:
- Surface water management and collection.
- Subsoil and land drainage.
- Stormwater control systems.
- Sustainable urban drainage systems (SuDS).
- French drain installation.
- Soakaway construction and crate systems.
- Channel and linear drainage for driveways and hard standings.
- Underground drainage installation and sewer connection.
- Drainage for new builds and extensions.
- Drainage repair and remediation on existing sites.
Every drainage solution integrates with our wider groundworks capability. Foundations, RC frame construction, underpinning, site preparation. All under one contract. All delivered by the same team.
Why Drainage in London Demands Specialist Expertise
London presents unique drainage challenges. Dense urban development, high water tables, and clay-heavy soils demand proper engineering. Generic solutions fail here.
Poor drainage leads to serious consequences such as:
- Foundation damage from saturated bearing strata.
- Flooding on site and to neighbouring properties.
- Soil erosion and destabilised retaining walls.
- Corrosion of buried utilities from sustained moisture.
- Non-compliance with LABC, SuDS, and planning requirements.
Our drainage contractors in London understand these conditions. We combine rigorous site investigation with precision installation. Every system is engineered for London’s specific ground conditions, not copied from a supplier’s brochure.
Our Drainage Installation Process
Every drainage project of WJB Ground Works follows a structured, quality-controlled process to ensure effective water control and site protection.
Site Assessment
Full investigation of soil, terrain, water table & existing drainage routes.
System Design
Tailored pipe sizes, gradients & chamber positions specified with precision.
Trench Excavation
Laser-level accuracy is maintained throughout every drainage trench we dig.
Pipe Installation
Premium pipes laid on granular bedding, jointed & aligned throughout.
Backfill Compaction
Trenches compacted in layers, surfaces reinstated to match existing finish.
Final Testing
Hydraulic pressure tests verify performance before documentation handover.
Why Choose WJB Ground Works as Your Drainage Company in London
There are many drainage companies in London. Here is what makes WJB different.
We have been delivering drainage and groundworks projects across Greater London since 2014. Our track record spans small residential installations through to complex commercial drainage infrastructure. That decade of experience means we have encountered and solved virtually every drainage challenge London’s ground conditions present.
Many drainage companies in London rely on subcontractors. That means fragmented responsibility and inconsistent quality. At WJB, every project is delivered by our own integrated team of engineers, project managers, and skilled tradespeople. You have one point of contact throughout. Someone who knows your project and owns the outcome.
Our safety record is not a statistic. It is a culture. Our award-winning safety team leads a programme of rigorous standards embedded at every level of the business. For clients, that means complete confidence. Work is executed safely, compliantly, and without costly delays.
Every drainage system we design starts with a thorough site survey. Not a standard specification copied from a folder. We engineer solutions for your specific ground conditions, loading requirements, and planning context. Then we build them with precision.
We are recognised across Greater London, Surrey, Luton, and Essex for sustainable drainage systems. As SuDS requirements become increasingly mandatory across London boroughs, our expertise gives your project a decisive advantage at planning and building control.
Drainage can be contracted as a standalone service. Or combined with our full groundworks package. Foundations, RC frame, underpinning, site preparation. We shape our approach around your project, not the other way around.
Drainage Systems We Install Across London
Not every drainage challenge is the same. Ground conditions, site layout, project type, and planning requirements all shape the right solution. WJB Ground Works designs and installs the full range of drainage systems across Greater London, each one specified for the site it serves.
□Surface Water Drainage Systems
Surface water drainage collects rainwater runoff from roofs, driveways, patios, and hard standings. It conveys it safely away from buildings and structures. As specialist drainage companies in London, we design surface water systems that comply with current building regulations. SuDS-compliant solutions are available where planning requires attenuation of runoff.
□Subsoil and Land Drainage
Subsoil drainage is essential on sites with high water tables or clay-heavy ground. We install perforated pipe systems, French drains, and land drainage schemes. These relieve groundwater pressure, improve soil stability, and protect foundations from moisture-related deterioration.
□Sustainable Drainage Systems (SuDS)
SuDS are now a standard requirement from London planning authorities. We design and install the full range of SuDS components. Permeable paving, infiltration trenches, soakaways, detention basins, and attenuation tanks. Your project will meet planning conditions and long-term environmental performance standards.
□Foul Water and Sewer Connections
For new builds and extensions, we install complete foul drainage systems. We manage connections to the public sewer network in accordance with Building Regulations Approved Document H. All works are coordinated with Thames Water and the relevant local authority.
□Commercial Site Drainage
Commercial drainage demands greater engineering rigour. Larger pipe capacities, more complex layouts, and stricter regulatory compliance. WJB Ground Works is a trusted drainage contractor in London for commercial clients. We have delivered drainage infrastructure on office developments, industrial sites, retail schemes, and mixed-use projects across Greater London.
Areas of London Our Drainage Contractors Serve
WJB Ground Works delivers drainage contractor services across all areas of Greater London. Inner London or the Outer Boroughs, our teams are available to survey, design, and deliver.
London Boroughs We Cover:
We also serve Surrey, Essex, Luton, and Ascot as part of our wider operational footprint across the South East.
Drainage FAQs: Answers from WJB Ground Works
We handle the full range. Residential surface water drainage, soakaway installations, SuDS schemes, foul sewer connections, land drainage for new builds, and large-scale commercial site drainage. Drainage can be delivered standalone or as part of a full groundworks contract.
Look out for waterlogged ground, surface flooding after rainfall, damp in basements, cracks in walls or foundations, and standing water on driveways. If you notice any of these signs, contact us for a site assessment. Early intervention costs far less than reactive repair.
Yes. We provide a full design-and-build service. Site surveys, drainage drawings, calculations, and SuDS compliance documentation are all included where required.
Yes. All installations are designed to comply with Building Regulations Approved Document H and current SuDS requirements. We manage building control submissions and provide full documentation for sign-off.
Yes, and this is one of WJB Ground Work’s most significant advantages. Drainage integrates with excavation, foundations, RC frame construction, underpinning, and site preparation. One contract, one team, one programme.
We cover all 32 London boroughs plus the City of London. We also serve Surrey, Essex, Luton, and Ascot. If you are not sure whether we cover your area, contact us directly.
It depends on the scope. A straightforward residential soakaway may take one to three days. A full site drainage scheme for a new build typically runs one to three weeks as part of the groundworks programme. We provide a detailed programme at the quotation stage.
Integration, accountability, and experience. We deliver every project with our own in-house team. No subcontractors or gaps in accountability. We have been operating since 2014, carry an award-winning safety record, and maintain a loyal repeat client base. We take ownership of outcomes, not just workscopes.
Yes. We work with homeowners, residential developers, commercial developers, main contractors, and public sector clients. Our drainage solutions scale from single-property installations to large commercial site drainage infrastructure.
Yes. We manage foul drainage connections to the public sewer network, working in accordance with Thames Water requirements and Building Regulations Approved Document H. All connection works are coordinated with the relevant utility and local authority.