One Stone

sustainability advice

Edinburgh, Midlothian

United Kingdom

About One Stone

One Stone is a global sustainability advisory firm specializing in strategy and communication. Its aim is to deliver excellence, sustainable business value, and real change by helping companies transform their challenges into opportunity.

Client services include strategy and sustainability leadership advice, trend mapping, materiality and reporting, stakeholder engagement, carbon management and helping to build a strong case for transformation and engage employees.

Operating across three continents, One Stone blends local presence with global perspective, using the latest low-carbon digital technology to deliver 24/7 project turnaround with a small footprint.

To challenge ourselves, show integrity and be part of a wider community of change. We want to be the best we can be—and inspire our clients, colleagues and friends! By committing to take a 360° view of our business, our aim is to become as economically, socially and environmentally sustainable as possible.

The Change We Seek®

One Stone’s purpose is to empower clients to embrace sustainability, integrate it into the business and make meaningful changes that add lasting value for society and the environment as well as the bottom line – it’s about turning business into an engine for good.

What makes us a better company?

B Impact Report

Certified since: 

August 2013

Company Score

Median Score*



The Environment section of the Assessment evaluates a company's environmental performance through its facilities; materials, resource, and energy use; and emissions. Where applicable, it also considers a company's transportation/distribution channels and environmental impact of its supply chain. This section also measures whether a company's products or services are designed to solve an environmental issue, including products that aid in the provision of renewable energy, conserve resources, reduce waste, promote land/wildlife conservation, prevent toxic/hazardous substance or pollution, or educate, measure, or consult to solve environmental problems.



The Worker section of the survey assesses the company's relationship with its workforce. This section measures how the company treats its workers through compensation, benefits, training, and ownership opportunities provided to workers. It also focuses on the overall work environment within the company through management/worker communication, job flexibility and corporate culture, and worker health and safety practices.



The Customers section of the Assessment measures the impact a company has on its customers. The section focuses on whether a company sells products or services that promote public benefit, and if those products/services are targeted towards serving underserved populations. Questions in this section will measure whether a company's product or service is designed to solve a social or environmental issue (e.g. improves health, preserves environment or creates economic opportunity to individuals or communities, promotes the arts/sciences, or increases the flow of capital to purpose-driven enterprises).



The Community section of the survey assesses a company's impact on its community. The Community section evaluates a company's supplier relations, diversity, and involvement in the local community. The section also measures the company's practices and policies around community service and charitable giving. In addition, this section includes if a company's product or service is designed to solve a social issue, including access to basic services, health, education, economic opportunity, arts, and increasing the flow of capital to purpose-driven enterprises.



The Governance section of the Assessment evaluates a company's accountability and transparency. The section focuses on the company's mission, stakeholder engagement, and overall transparency of the company's practices and policies.

Overall B Score

80 out of 200 is eligible for certification

*Of all businesses that have completed the B Impact Assessment

*Median scores will not add up to overall

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Company Highlights: 

Community: Company gives preference to local suppliers; company's relationships with suppliers last on average more than five years; 96% of company expenses spent with local independent suppliers; 75% of company ownership comes from underrepresented populations; over 30% of significant suppliers majority owned by women or ethnic minorities.

Environment: Office-wide recycling program includes paper, cardboard, plastic, glass & metal, and composting; office uses recycled office supplies, reclaimed furniture, and reusable catering supplies; over 75% of printed materials use recycled paper content; company monitors and records energy usage and GHG emissions; company uses geothermal heating at facilities.


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