Permarock is proud to announce that Sustainable Investments Ltd, Permarock’s parent company, based in the North West, have ranked 11th in the 50 fastest growing companies. This is up from our ranking of 15th last year, reflecting our sustained growth, innovation and collaborative success.
Compiled by leading law firm Ward Hadaway and the Greater Manchester Chamber of Commerce, the Fastest 50 recognises the highest-performing privately-owned businesses in the region based on turnover growth and profitability. The 2025 rankings were announced during a celebratory event in Manchester on Friday 13 June, attended by business leaders from across the region.
As the group’s EWI system specialist, Permarock supports energy efficiency projects across the UK with high-performance external wall insulation solutions – helping to decarbonise homes, enhance kerb appeal and preserve local character. Our solutions are trusted by housing providers and specifiers for their technical quality, compliance and long-term value.
Our group chair Derek Horrocks said: “Permarock’s technical expertise and product performance play a major part in our group’s success. This recognition is a result of our focus on quality, collaboration and long-term results, values shared across all Sustainable Investments companies.
“Our systems continue to support the transition to net zero by enabling safe, attractive and energy-efficient homes at scale. I’m proud of the role Permarock plays in delivering that change alongside our partners.” Explore our latest innovations here: www.permarock.com