• The Installation Of Three Water Tanks, Potable, Non Potable and Rainwater Harvesting For One Of The UK's Largest International Airport Heathrow Airport
  • We Specialise in Sectional Water Storage Tanks Up To 1.3m Litres, Free Site Survey, On-Site Assembly, Cater for Restricted Access And Have Fully Certified WRAS Approved Products
  • We Specialise in One Piece Tanks Up To 24K Litres, Customised Tanks Available, Insulated Or Uninsulated Models Available And Are Fully Certified (BS EN ISO 9002 1994)
  • We Offer Custom Moulding Services For The Automotive, Industrial, Transport, Energy, FMCG, Water & Wastewater and Construction Industries

GRP Water Storage Tank Manufacturer & Plastics Supplier Since 1968


Nicholson Plastics Ltd is a leading UK manufacturer of water storage tanks, with a proven track record in the supply of One piece tanks, Sectional tanks, Custom designed tanks and dimensioned water tanks. All of our tanks are fully WRAS approved and built to the highest quality. We provide end to end support to all of our customer by providing a full project management service in finding the right solution for our customers every time for projects of all sizes.

Sectional tanks

Our large scale sectional tanks hold up to 1.3m litres of water and have been installed all over the world. Sectional tanks offer the ideal solution for the storage of potable water and can be installed on site even where access is restricted. Our Water storage tanks are manufactured by GRP which offers customers a durable solution which can withstand extreme loads and weather conditions, including being UV resistent. They are very cost effective, with self draining bases and very little maintenance. We have four main types of Sectional tanks, three of which use Hot Press GRP panels and one using hand laid internally flanged panels. Customers have the choice of externally flanged base tanks, internally flanged base tanks, internally flanged (I.F.) tanks or true totally internally flanged tanks (True T.I.F.). For more information visit our product range or download the sectional tank brochure.

See our case studies for examples of some of the projects we have undertaken.


One piece tanks

One-piece tanks offer a complete range of water storage of up to 24,000 litres. These GRP tanks can be installed both internally and externally and are manufactured from glass reinforced polyester (GRP) resins. All of our tanks comply with British Standards (BS EN ISO 9002 1994 Quality Assurance Registration) and are WRAS approved. They come with a full range of connections and ancillary items to ensure ease of installation. With virtually no maintenance and ideal for the storage of water in restricted spaces, one piece tanks have proven extremely popular in the UK and internationally as a solution to water storage. Our Multi Part(M.P.) One Piece Tanks are designed to keep costs to a minimum where dimensions have been carefully planned to ensure no tank takes up more than two pallets which reduces shipping costs. Our water tanks are universally accepted in all industries as an ideal solution to cold water storage and recommended by architects, consulting engineers and within the construction industry in general.

12,000 litre Sectional water tank

One piece water storage tanks

3 part water tank

GRP custom moulded sewage trough

Multi-part tanks

Our durable and robust Multi-part tanks can be custom made to your order

 Custom Moulding

We manufacture and supply bespoke products through custom moulding

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Nicholson Plastics Ltd.

Supplier of Sectional and One Piece Water Storage tanks

  • Nicholson Plastics Limited manufacture to British Standards read about our certifications
  • We supply our products worldwide
  • Custom design is available contact our sales team for more information

Express delivery throughout the UK!