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Civils & Drainage
Find reliable civils and drainage supplies in Leicestershire and Rutland, suitable for groundworks, infrastructure and site development projects. William Hercock supports trade contractors and builders with quality drainage materials, offering local delivery and branch collection across Leicester, Loughborough, Melton Mowbray and Oakham.
Our range includes underground drainage pipes, fittings, inspection chambers, ducting, soakaway systems and associated groundworks materials. Using the correct civils products ensures effective water management, structural stability and long-term performance across residential and commercial projects.
Civils and drainage materials are essential for foundations, utility installations, surface water control and below-ground infrastructure. Selecting durable, compliant components helps reduce future maintenance issues and ensures projects meet required standards.
For best results, confirm load ratings, pipe diameters and compatibility before installation. Proper ground preparation and correct jointing methods are key to achieving reliable drainage performance.
Underground Drainage & Groundworks Materials
Civils Supplies Delivered Across Leicestershire
Drainage Pipes, Chambers & Ducting
Order civils and drainage materials online today with fast delivery across Leicestershire & Rutland or collect from your nearest William Hercock branch.
Brett Martin 110mm x 45 deg Long Radius Plain End Bend
Brett Martin 110mm x 45° Long Radius Plain End Bend is a durable PVCu underground drainage fitting designed to create a smooth directional change in 110mm drainage pipework. The long radius design improves wastewater flow while the plain end connections allow flexible installation using compatible couplers or sockets.
£37.72 INC VAT
Brett Martin 150mm Twinwall x 90° Triple Socket Equal Branch
The Brett Martin 150mm Twinwall 90° Triple Socket Equal Branch is a twinwall drainage junction fitting designed to create a 90° branch connection in 150mm twinwall surface water and land drainage systems. Triple socket ends provide secure connection points for efficient underground drainage layouts.
£58.89 INC VAT
Brett Martin 160mm Socket Plug
The Brett Martin 160mm Socket Plug is a PVCu underground drainage accessory designed to blank off a 160mm socket opening securely. Ideal for unused outlets and future connections, it supports watertight integrity in foul and surface water drainage systems.
£25.12 INC VAT
Brett Martin 160mm Square Alloy Sealing Plate
The Brett Martin 160mm Square Alloy Sealing Plate is a durable cover plate designed to seal compatible 160mm square hopper or gully tops. Ideal for temporarily or permanently blanking an opening (application dependent), it helps protect drainage connections and maintain a tidy finish.
£28.41 INC VAT
Brett Martin 160mm Square Hinged Alloy Grid
The Brett Martin 160mm Square Hinged Alloy Grid is a robust metal grid cover designed for compatible 160mm square hopper and gully tops. With a hinged design for easier access, it supports maintenance-friendly external drainage installations.
£27.65 INC VAT
Brett Martin 300mm Twinwall x 90° Double Socket Bend
The Brett Martin 300mm Twinwall 90° Double Socket Bend is a heavy-duty twinwall drainage fitting designed for right-angle direction changes in 300mm underground surface water drainage networks. With double socket ends, it provides secure connections for large-capacity site drainage installations.
£137.29 INC VAT
Brett Martin 300mm Twinwall x 90° Triple Socket Equal Branch
The Brett Martin 300mm Twinwall 90° Triple Socket Equal Branch is a heavy-duty twinwall drainage junction fitting designed to create a 90° branch connection in 300mm underground surface water drainage networks. Featuring triple socket ends, it supports secure jointing for large-capacity site drainage systems.
£306.07 INC VAT
Brett Martin 40mm Traps Universal Oulet P Outlet Trap - 38mm Seal White
The Brett Martin 40mm Traps Universal Oulet P Outlet Trap - 38mm Seal White is a durable Plastic waste trap designed to provide reliable wastewater discharge and secure connection in domestic plumbing systems.
£7.84 INC VAT
Brett Martin 50mm Push-Fit Waste Polypropylene Rubber Waste Adaptor Black
The Brett Martin 50mm Push-Fit Waste Polypropylene Rubber Waste Adaptor Black is a durable Polypropylene waste adaptor designed to provide a secure and practical solution for domestic waste pipe installations.
£3.19 INC VAT
Brett Martin 82.4mm Push Fit Soil 82.4mm / 110mm Air Admittance Valve (Internal Use Only) Black
The Brett Martin 82.4mm Push Fit Soil 82.4mm / 110mm Air Admittance Valve (Internal Use Only) Black is a durable PVCu soil drainage pipe fitting designed to provide a secure and reliable connection within above-ground waste systems.
£25.53 INC VAT
Brett Martin 82.4mm Push Fit Soil 82.4mm / 110mm Air Admittance Valve (Internal Use Only) Grey
The Brett Martin 82.4mm Push Fit Soil 82.4mm / 110mm Air Admittance Valve (Internal Use Only) Grey is a durable PVCu soil drainage pipe fitting designed to provide a secure and reliable connection within above-ground waste systems.
£25.53 INC VAT
Brett Martin Cascade Deepstyle 115mm 90° Angle Black
The Brett Martin Cascade Deepstyle 115mm 90° Angle in Black is a cast iron effect PVCu corner fitting designed to allow gutter systems to turn neatly around building corners.
£16.71 INC VAT
Brett Martin Cascade Ogee Hopper Medium Black
The Brett Martin Cascade Ogee Hopper Medium in Black is a decorative cast iron effect PVCu rainwater hopper designed to collect water from gutter outlets and direct it into Cascade downpipe systems while providing a traditional architectural feature.
£35.22 INC VAT
Brett Martin Cascade Push-Fit Soil 110mm 92.5° Single Socket Bend Black
The Brett Martin Cascade Push-Fit Soil 110mm 92.5° Single Socket Bend in Black is a cast iron effect PVCu soil pipe fitting designed to change direction in soil drainage systems while maintaining a traditional cast iron appearance.
£25.56 INC VAT
Brett Martin Cascade Round 68mm Downpipe 135° Branch Black
The Brett Martin Cascade Round 68mm Downpipe 135° Branch in Black is a cast iron effect PVCu fitting designed to connect an additional downpipe into an existing Cascade rainwater system.
£26.55 INC VAT
Brett Martin Cascade Round 68mm Downpipe Anti-Splash Shoe with Lugs Black
The Brett Martin Cascade Round 68mm Downpipe Anti-Splash Shoe with Lugs in Black is a cast iron effect PVCu outlet fitting designed to reduce water splashing at ground level.
£18.90 INC VAT
Brett Martin Cascade Roundstyle 112mm 135° Gutter Angle Black
The Brett Martin Cascade Roundstyle 112mm 135° Gutter Angle in Black is a cast iron effect PVCu gutter fitting designed for angled roofline corners where a 135° direction change is required.
£11.90 INC VAT
Brett Martin Cascade Small Undated Hopper Black
The Brett Martin Cascade Small Undated Hopper in Black is a cast iron effect PVCu hopper designed to collect rainwater from gutter outlets and channel it into Cascade downpipe systems.
£33.50 INC VAT
Brett Martin Rainwater 112mm Roundstyle 2m Gutter Arctic White
The Brett Martin Rainwater 112mm Roundstyle 2m Gutter in Arctic White is a durable PVCu half-round gutter designed to efficiently channel rainwater from rooflines into drainage systems.
£10.35 INC VAT
Brett Martin Rainwater 112mm Roundstyle 2m Gutter Brown
The Brett Martin Rainwater 112mm Roundstyle 2m Gutter in Brown is a durable PVCu half-round gutter designed to collect and direct rainwater efficiently from rooflines into downpipe systems.
£11.39 INC VAT
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