Mainline Groundworks

Our Services

Groundworks solutions for every project.

Groundworks Contractors

Full-service groundworks for commercial and residential construction.

We deliver complete groundworks packages including piling, excavation, site clearance, foundations and enabling works. From housing developments to co...

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Groundworks for Developers

Developer-led groundworks packages: enabling works, foundations, drainage interfaces and adoption-ready civils.

We deliver groundworks for developers on residential and mixed-use schemes where plot sequencing, adoption interfaces and programme milestones matter....

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Groundworks for Housebuilders

Plot-led groundworks for housebuilding phases: foundations, services, drainage and phase handovers.

We work with housebuilders on phased residential developments where each plot or phase must be handed over cleanly to follow-on trades. Scopes include...

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Groundworks for Main Contractors

Subcontract groundworks for principal contractors: live-site sequencing, interfaces and package accountability.

We subcontract groundworks packages to main contractors who need a single accountable civils partner on live sites. Work is planned around your progra...

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Commercial Groundworks Contractors

Commercial and infrastructure groundworks contractors for developments, yards and civils packages.

We act as commercial groundworks contractors for schemes that need coordinated civils delivery — not a single trade in isolation. Packages span enabli...

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Earthworks Contractors

Cut, fill, regrading and formation works for commercial and infrastructure sites.

Our earthworks teams deliver cut and fill operations, site regrading, and engineered formation works for commercial and infrastructure projects. We pl...

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Roads and Sewers Contractors

Roads, sewers and adoptable infrastructure groundworks for development schemes.

We deliver roads and sewers packages for commercial and residential developments — formation, foul and surface water runs, manholes, kerbs and reinsta...

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Section 278 Contractors

Section 278 highway works and off-site connection groundworks for developments.

We deliver Section 278 highway works where developments require off-site connections, junction improvements, footways and carriageway adjustments to t...

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Section 38 Contractors

Section 38 adoptable estate roads — formation, kerbs, surfacing and handover for adoption.

We build Section 38 adoptable estate roads for residential and mixed-use schemes: sub-base formation, drainage interfaces, kerb lines, footways and su...

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Section 104 Contractors

Section 104 adoptable sewers and drainage networks for development adoption.

We install Section 104 adoptable foul and surface water sewers for developments that must be vested with the water authority. Packages include pipe ru...

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Commercial Drainage Contractors

Commercial civils drainage: foul and surface water runs, manholes and SuDS interfaces on site.

We deliver commercial drainage groundworks for developments and industrial sites — foul and surface water runs, manholes, pumping interfaces and SuDS ...

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Attenuation System Contractors

Attenuation and SuDS storage systems for commercial developments and adoptable networks.

We install attenuation systems where SuDS design requires on-site storage — crates, tanks, flow controls and access chambers built for procurement-led...

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Underpinning Contractors

Stabilise and strengthen existing foundations for movement, subsidence or structural upgrades.

Underpinning deepens or widens existing foundations so the structure is supported where the ground or loading has changed. We work where there is stru...

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Piling Contractors

Piling for new builds, extensions and structural works on difficult or tight sites.

Piling solutions for residential and commercial projects, including new builds, extensions and structural works. We choose approaches around ground co...

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CFA Piling Contractors

CFA piling for restricted sites and low-vibration urban work.

Continuous Flight Auger (CFA) piling drills a bore and pumps concrete as the auger is withdrawn, forming a cast-in-place pile with low spoil and contr...

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Mini Piling Contractors

Section piles and CFA mini piling for low headroom and tight sites.

Mini piling is ideal where access is limited or headroom is low. We install section piles and CFA mini piles for extensions, basements and constrained...

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Foundation Contractors

Commercial and residential foundation contractors: strip, raft, pad and piled solutions to engineer's design.

We deliver foundation packages for developers, housebuilders and main contractors — strip, pad, raft and piled foundations built to structural design ...

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Foundation Repair

Repair and stabilisation where foundations have failed, cracked or moved.

Foundation issues show up as movement, cracking or loss of support. We work from investigation and structural input to repair, rebuild or stabilise fo...

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Foundation Depth Issues

Investigate and correct shallow or inconsistent foundation depths.

We assess foundation depth issues where existing footings are too shallow, variable or exposed to frost and movement risk. Our team works from enginee...

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Building Regs Foundation Compliance

Bring foundations into line with building control and structural requirements.

We help when foundation work needs to be aligned with building control, structural design and practical site constraints. That can mean checking what ...

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Clay Soil Foundation Problems

Assess and resolve foundation movement caused by clay soil conditions.

Clay soils shrink and swell with seasonal moisture changes, which can affect foundations and create movement. We work with engineers to stabilise the ...

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Tree Impact Foundation Solutions

Foundation solutions where nearby trees are affecting ground moisture or support.

Trees can change soil moisture levels and affect nearby foundations, especially on clay ground. We help assess tree-related foundation risk and delive...

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Foundation Remedial Work

Targeted remedial works for compromised or under-performing foundations.

We carry out remedial foundation work where support has been compromised by movement, design issues or ground conditions. Every scheme is coordinated ...

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Underpinning Advice

Practical advice and delivery support for underpinning projects.

We provide practical underpinning advice and delivery support where existing foundations need to be deepened or stabilised. The solution is always cho...

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Structural Groundworks Consultation

Consultation for projects with uncertainty around foundations, soil and buildability.

We provide structural groundworks consultation for projects with uncertainty around foundations, soil and buildability. The aim is to define the right...

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Ground Investigation Services

Coordinate ground investigation inputs for foundation and testing decisions.

We arrange and interpret ground investigation inputs so the foundation strategy is based on real site conditions rather than assumptions. That support...

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Soil Bearing Capacity Testing

Assess how well ground can support load before foundation decisions are made.

We assess soil bearing capacity so the foundation design reflects the ground's real ability to support load. This is especially useful on variable sit...

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Plate Load Testing

Verify ground response under load before finalising foundation choices.

Plate load testing helps verify how ground responds under load, giving confidence around foundation performance and settlement. We use it where bearin...

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Incremental Plate Load Testing

Staged plate load testing for more detailed bearing data.

Incremental plate load testing applies load in stages so the ground response can be checked more carefully. It is useful where the engineer wants deta...

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Concrete Repair

Structural and non-structural concrete repairs for slabs, beams and elements.

Spalled, cracked or carbonated concrete needs proper prep and compatible materials. We remove unsound concrete, treat reinforcement where specified an...

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Excavation Contractors

Bulk excavation, strip excavation and trenching for construction.

We carry out bulk excavation, strip excavation and trenching for foundations, utility runs and structural formations. Machine and hand dig to programm...

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Site Clearance Contractors

Vegetation clearance, demolition and waste removal to prepare sites.

We clear sites for development: vegetation, structures, hardstanding and arisings. Waste is removed and disposed of responsibly with documentation....

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Muck Away Services

Excavate, load and dispose of spoil with the right documentation.

Muck away services cover the loading, removal and disposal of spoil from groundworks and excavation. We plan routes, waste handling and documentation ...

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Bulk Earthworks

Large-scale cut, fill and formation works for development sites.

Bulk earthworks cover the large-scale movement of soil and fill needed to get a site to formation or platform levels. We work to the design and progra...

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Site Preparation Contractors

Site preparation contractors for commercial schemes: clearance, access, spoil and formation readiness.

Our site preparation contractors mobilise early on commercial and residential schemes — vegetation and arisings clearance, temporary access, haul rout...

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Concrete Foundations

Reinforced and mass concrete foundations and ground beams.

We supply and place reinforced concrete foundations, mass concrete, blinding and ground beams. All work to specification with testing and records....

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Enabling Works Contractors

Access roads, temporary drainage and site set-up before main works.

Enabling works prepare the site for main construction: access roads, temporary drainage, fencing, hoardings and temporary services so the project can ...

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