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20,000 obsolete Cordant Security uniforms sustainably converted into Refuse Derived Fuel


Cordant Security is a specialist provider of security solutions, working with a national client base of high-profile blue-chip organisations with complex risk profiles, delivering a comprehensive and customer focused service, tailored to their needs. The 8th largest security company within the UK, Cordant Security employs more than 4,000 personnel across a wide spectrum of industry sectors and strives to adopt best sustainability principles throughout their supply chain. 


In 2014, Cordant Security approached GPT Waste with a requirement to sustainably dispose of 20,000 obsolete uniforms. The task was made particularly challenging by the fact that the uniforms were designed for security and other FM related duties and not suitable for general wear. As such, they were unsuitable for standard recycling methods.

We worked in partnership with GPT waste to analyse the most efficient and practical solutions. We learnt lessons from across the multiple sectors in which we operate. However, we found that the RDF method would be of most use to our own business by supporting our commitment to sustainability. As this solution is also saving us money, it is an all-round win for the business

Edward MacfarlaneManaging Director, Cordant Security, 2014


As the UK’s largest independent provider of waste management solutions, GPT Waste was commissioned by Cordant Security to review the company’s supply chain and help find a sustainable solution to eliminate the unrecyclable uniforms. In order to meet these objectives, it was essential for GPT Waste to arrive at a solution which had minimal environmental impact.


GPT Waste recommended the implementation of an innovative project that would turn the garments into Refuse Derived Fuel (RDF). This process uses new technology to capture the energy in non-recyclable waste and transform it into bricks or pellets that can be used to replace fossil fuels like coal or oil.


This solution was the most sustainable option for Cordant as every tonne of waste diverted from landfill eliminates 0.54 tonnes of carbon dioxide, equivalent to that being emitted in landfill gas. This is a significant saving in greenhouse gas emissions.