Thornton Reynolds Ltd
London Borough of Southwark, United Kingdom
December 2025
Design & building
Service with Minor Environmental Footprint
United Kingdom
Thornton Reynolds is an established Mechanical Electrical & Public Health (MEP) engineering consultancy that has been delivering building services designs since 2009. The consultancy’s aim is to create a reliable and dependable business, built around its clients, dedicated to quality project delivery for minimizing carbon use of refurbishments, extensions and new buildings. Thornton Reynolds has assembled a high-quality building services design team, comprising experts from across the engineering and building services environment spectrum. Working with Thornton Reynolds, you’ll find a group of enthusiastic people with mechanical, electrical, sustainability and plumbing expertise. As a leading firm of M&E design engineers, our experience informs our engineering. It influences what we say, contributes to what our clients need, delivering when it’s needed. We ensure our contribution makes that key difference to regeneration or new build projects. The fundamental belief is that effective and sustainable solutions need to work in terms of both performance and cost. The knowledge and experience of our diverse team allow us to guide our clients to simpler ways to do things better. Inventive, colourful, imaginative decarbonisation ideas come from the great building services engineers we
Overall B Impact Score
Governance 16.0
Governance evaluates a company's overall mission, engagement around its social/environmental impact, ethics, and transparency. This section also evaluates the ability of a company to protect their mission and formally consider stakeholders in decision making through their corporate structure (e.g. benefit corporation) or corporate governing documents.
What is this? A company with an Impact Business Model is intentionally designed to create a specific positive outcome for one of its stakeholders - such as workers, community, environment, or customers.
Workers 28.1
Workers evaluates a company’s contributions to its employees’ financial security, health & safety, wellness, career development, and engagement & satisfaction. In addition, this section recognizes business models designed to benefit workers, such as companies that are at least 40% owned by non-executive employees and those that have workforce development programs to support individuals with barriers to employment.
Community 17.3
Community evaluates a company’s engagement with and impact on the communities in which it operates, hires from, and sources from. Topics include diversity, equity & inclusion, economic impact, civic engagement, charitable giving, and supply chain management. In addition, this section recognizes business models that are designed to address specific community-oriented problems, such as poverty alleviation through fair trade sourcing or distribution via microenterprises, producer cooperative models, locally focused economic development, and formal charitable giving commitments.
Environment 27.4
Environment evaluates a company’s overall environmental management practices as well as its impact on the air, climate, water, land, and biodiversity. This includes the direct impact of a company’s operations and, when applicable its supply chain and distribution channels. This section also recognizes companies with environmentally innovative production processes and those that sell products or services that have a positive environmental impact. Some examples might include products and services that create renewable energy, reduce consumption or waste, conserve land or wildlife, provide less toxic alternatives to the market, or educate people about environmental problems.
What is this? A company with an Impact Business Model is intentionally designed to create a specific positive outcome for one of its stakeholders - such as workers, community, environment, or customers.
Customers 1.5
Customers evaluates a company’s stewardship of its customers through the quality of its products and services, ethical marketing, data privacy and security, and feedback channels. In addition, this section recognizes products or services that are designed to address a particular social problem for or through its customers, such as health or educational products, arts & media products, serving underserved customers/clients, and services that improve the social impact of other businesses or organizations.