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Our Businesses

Sustainable Investments incorporates four distinct and successful companies and continues to go from strength to strength. We achieved £75m revenue in 2024-25 and are forecast to grow to £250m over the next 5 years.

It is all thanks to our people, all aligned to our Group culture and with a clear vison that makes a real positive difference in the journey to net zero. We are excited to be building something special together.

About Sustainable Building Services (UK) Ltd

Sustainable Building Services (SBS) is a purpose-driven business at the forefront of residential energy efficiency and decarbonisation.

With decades of experience under our belt, we lead by example, applying industry best practice and innovative technologies and working to develop green skills throughout the supply chain.

SBS delivers multi-measure energy efficiency works to thousands of homes every year, working to the highest levels of PAS / MCS compliance across private and social homes.

We routinely work in occupied properties with minimal impact to residents, and in a manner that fosters positive impact on individual households and wider communities alike.

About Sustainable Energy Services (UK) Ltd

Sustainable Energy Services (SES) provides consultancy, funding management, housing stock services, and support for retrofit energy efficiency and decarbonisation projects. We also serve homeowners and private landlords via the Group's consumer-facing brand, Home Hero, changing the way homeowners and private landlords can access and fund energy efficiency improvements through an end-to-end solution.

Our work helps improve the living conditions, health, comfort, and well-being of thousands of households each year to help reduce fuel poverty and address the five biggest challenges today: the cost-of-living, energy security, climate change, housing and health crises – all supporting the UK’s progress towards meeting net zero targets.

In addition to services provided to clients and customers, we also provide marketing, PAS compliance, customer engagement services, and support for the wider Sustainable Investment group of businesses.

About Sustainable Smart Technologies Ltd

Sustainable Smart Technologies (SST) is a full-service IoT provider delivering advanced environmental and energy monitoring solutions to reduce energy usage, cut emissions, and drive sustainability. We harness data-driven technology to improve lives, places and spaces.

Our Neronis® platform empowers clients across commercial, living and work spaces, education and manufacturing sectors to monitor energy usage, occupancy, water consumption, and indoor environmental conditions with precision.

We deliver invaluable real-time data and actionable insights that empower organisations to meet economic, environment and social obligations.

About Permarock Products Ltd

With roots dating back to the 1970s, Permarock is Britain’s longest-established UK-owned manufacturer and supplier of external wall insulation and render systems.

Developed to meet the most exacting specifications, our external wall insulation solutions greatly improve the thermal performance of both new and existing buildings. They are suitable for all construction types and sectors – everything from low-rise social housing to high-rise blocks; and from recladding schemes to new schools, hospitals, hotels and private residential schemes.

Importantly, our wide range of insulation systems, renders and finishes is backed by unrivalled technical support for the designer. Our expertise adds considerable value to clients’ projects, ensuring that every system is specified to the highest standards and tailored to deliver maximum impact and value.