One Stone

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One Stone Sustainability Actions

Co-developed the Triple Bottom Line

As early pioneers of corporate sustainability in Europe, we co-developed the Triple Bottom Line with John Elkington (People, Planet, Profit). Now our core focus is helping organisations embed that thinking and align with the UN 2030 Agenda.

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Certified B Corp since 2019

We’ve been a certified B Corp in AANZ since 2019, with verified high standards of performance, transparency, accountability and continuous improvement. In 2022 we recertified with a B Impact Score of 134.7 points—and in 2025 achieved 140.1, placing us among the highest in our sector and region.

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Recertified under new B Corp standards

Now we’re among the first B Corps globally to undergo recertification under the new B Corp Standards (V2) — the biggest uplift in the movement’s 20-year history.

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Certified women-owned business

We are a certified women-owned business with WEConnect International. By choosing us, you are uplifting women in business and demonstrating genuine commitment to a small, diverse and inclusive supplier.

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Responsible procurement and climate plan

We are committed to Justice, Equity, Diversity and Inclusion principles and reducing our environmental impacts by procuring responsibly and delivering on our climate action plan.

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Published sustainability guidance

At One Stone Advisors, our mission is to help businesses become stronger sustainability leaders, and that starts with getting green claims right. The UK’s Green Claims Code was created to make sure environmental claims are transparent, accurate, and meaningful. To support your business in staying compliant and building trust with stakeholders, we’ve pulled together a quick guide to its six key principles.

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What do our labels mean?

Certified B Corporation Logo

Certified B Corporation

About One Stone

  • Status
  • Unverified
  • Employees
  • 25 - 100
  • Country
  • United Kingdom