World's largest lagoon liner
Kazakhstan
Installation of the world's largest lagoon liner.
Geosynthetic Technology Ltd · Company 02522950 · Trading heritage since 1990
Active, accounts up to date·subcontractor & supplier·Head office Colchester
Geosynthetic Technology Limited (GT) is a specialist contractor focused on the provision and installation of high-performance Geomembranes for the containment of liquids, solids, and gases. With over 40 years of experience in plastic liner knowledge and lining system installation, the company has established an unrivalled reputation as a market leader, undertaking contracts in more than 35 countries across five continents. They are recognised as the leading HDPE liner and LLDPE Geomembrane supplier, installer, and welding contractor, offering comprehensive technical support, including site visits, technical drawings, risk assessments, and method statements.
Founded over 30 years ago by John Alexander, a pioneer in welded plastic linings, the company has a rich history in developing Geomembrane usage within the Landfill Sector and Water Engineering Industries. John Alexander, with previous experience as Managing Director of Airborne Industries Ltd, has been instrumental in leading Geomembrane installations globally. His son, Duncan Alexander, now Managing Director, joined the company in 1990, developing sales and marketing and solidifying Geosynthetic Technology Ltd's position as a market leader.
The company prides itself on its quality assurance, with all site work complying with ISO 9001 Quality Assured Operational Procedures. Impermeable lining systems installed by GT benefit from a long-term warranty of a minimum of 20 years. They are committed to total quality management, with a strong customer focus and a continually improving process approach, verified by an independent third party.
Their site staff are CSCS card holders, first aid certified, and supervisors hold SSSTS certificates, ensuring a high standard of health and safety on all projects.
Kazakhstan
Installation of the world's largest lagoon liner.
Saudia Arabia
Installation of the world's largest landfill liner.
Wakefield, UK
Installation of Europe's largest lined lake.
Lining installation projects for golf clubs, farms, and private homes.
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Geosynthetic Technology Limited (GT) is a Specialist Contractor in the provision and installation of high-performance Geomembranes for containment. Market leaders with over 40 years' experience. Their listed services include Waterproofing, Civil engineering and Marine & water engineering.
Geosynthetic Technology Ltd is registered at Nags Corner Wiston Road, Nayland, Colchester, CO6 4LT, in East of England.
Geosynthetic Technology Ltd states that it works across Nationwide.
Accounts filed for the year to 2025 report 16 employees, which places the company in the 10-49 employees band.
Geosynthetic Technology Ltd does not disclose turnover: UK small-company accounts are not required to. Based on headcount and trade debtors in its filed accounts, turnover is likely to fall between £920k and £2.5m. This is an estimate, not a filed figure.
Companies House lists Geosynthetic Technology Ltd as active, with accounts most recently made up to 2025-06-30.
Geosynthetic Technology Ltd displays ISO 9001, Constructionline, British Geomembrane Association and Essex Chambers of Commerce on its website.
Geosynthetic Technology Ltd works in Industrial, Infrastructure, Energy and Agricultural.
Geosynthetic Technology Ltd was incorporated on 1990-07-17.
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