Pattrick & Thompsons has been a trusted builders’ and timber merchant in King’s Lynn since 1865, offering quality Drainage & Ducting supplies—ideal for contractors, tradespeople, and homeowners. Drainage & Ductingsupplies are available for delivery or can be collected in our King's Lynn store. If you still need some assistance, please contact us.
What You’ll Find Here
Below Ground Drainage – Choose from pipes, bottle gullies, access chambers, bends, couplings, and soakaway crates for robust underground systems.
Manhole Covers – Secure, load-rated access points for maintenance and service entries.
Channel Drainage – Durable linear surface drainage solutions—perfect for patios, driveways, and external paved areas.
Why Shop with Us?
Local stock, local support – Visit our King’s Lynn site on Page Stair Lane for same-day click‑and‑collect or quick local delivery
Expert advice – Our long-serving team of local professionals understands regional drainage standards—and can guide you to the best solutionsQuality you can trust – We stock recognised brands and offer products compliant with UK regulations, backed by over a century of service .
Convenient purchasing options – Free delivery on orders over £50 plus flexible click‑and‑collect on all in‑stock items
🛠 Ready to Complete Your Project?
Browse our Below Ground Drainage, Manhole Covers, and Channel Drainage sections now. Whether you're planning a build or repair, Pattrick & Thompsons delivers reliable stock, expert insight, and local convenience to get your project done right—on time.
600x450x43.5mm Recessed Tray Rubber Seal Manhole Cover & Frame T11G3 - features a rubber gasket seal and 4 screws for secure locking. Suitable for application in pedestrian areas. The manhole is recessed for concrete/screed infill.
600x450x80mm Recessed Block Pavior Manhole Cover & Frame CD790R/80 - Fitted with integral lifting handles. Recessed for 65mm block paving or slabs. Non Sealed
Aco RainDrain Corner Unit with glavanised steel grating and vertical outlet - Crafted from recycled materials, this ingeniously designed product allows the seamless connection of up to four channels from any of the four sides. The removable spigot enables direct connection to a 110mm uPVC pipe located underneath.
ACO Hexdrain and Raindrain Outlet End Cap - Featuring a 110mm diameter, this ACO HexDrain and RainDrain Outlet End Cap allows for a seamless horizontal 110mm outlet.
ACO HexDrain Sump Unit Black Plastic 250mm Deep - is suitable for domestic applications up to Load Class A 15 - Pedestrian, cycleways, minimally trafficked areas (light domestic vehicles only). The high quality ACO HexDrain channels clip together, allowing for quick and easy installation.
ACO RainDrain Drainage Channel with Cast Iron Grate is part of the ACO RainDrain family of drainage channels. Manufactured from Vienite polymer concrete, it's suitable for traffic up to B 125 load class. The high quality ACO RainDrain channels interlock, allowing for quick and easy installation
1m Aco RainDrain Polymer Channel - Manufactured from Vienite, ACO's high strength polymer concrete material, ACO RainDrain is suitable for domestic applications up to Load Class A 15. Recommended Applications :Garage Thresholds, Patio and Paths, Pedestrian Precincts
Aco RainDrain Sump Unit Galv Steel Grating is manufactured from polymer concrete giving it a light, strong construction. The unit comes complete with a galvanised A15 rated grating and a sediment bucket.
Brett Martin Underground 110mm B1300 Drain Pipe Low Level P Trap Gully - Designed to suit 110mm drainpipes, this Brett Martin Drain Pipe Low-Level P Trapped Gully will help ensure foul odours do not penetrate your underground drainage system and back towards your property. A body of water will sit beneath the gully outlet, forming a barrier against nasty smells.
Underground 110mm x 3m B4001 Plain End Pipe provides a reliable solution for drainage systems. Measuring 3 metres in length and with a diameter of 110mm, this flexible pipe easily accommodates ground movement.
Underground 110mm x 45° B4091 Triple Socket Branch is a high-quality product manufactured in the UK with strict adherence to quality standards. Its exceptional design includes a combined lip and compression seal that ensures secure jointing and prevents dislodgement, providing peace of mind and easy installation.
Underground 110mm x 6m B4011 Plain End Pipe provides a reliable solution for drainage systems. Measuring 6 metres in length and with a diameter of 110mm, this flexible pipe easily accommodates ground movement.
Underground 110mm x 87½° B4081 Triple Socket Branch size is a reliable and efficient solution for connecting two underground drainage systems. With its push-fit connection, it offers convenience and ease of installation. Crafted from robust and durable uPVC, this triple socket branch is not only sturdy but also lightweight, making it simple to handle during installation.