Drainage - Underground drainage systems are installed professionally in plastic, clay or concrete pipes to Structural Engineers Specifications. All our work is carried out to Local Authority Building Inspectors approval and to United Utilities standards. From 100mm diameter pipes to 1200mm diameter main sewers up to 6m deep, we have the expertise, plant and equipment to supply install your drainage requirements safely. We are NRSWA (new Roads Street Work Act) Accredited (both Operative and Supervisor), and Confined Spaces trained to enable us to undertake sewer connections to public highways.