Rebecca Mills is an Impact Strategist and Founder of the Transformation Agency, The Lever Room™.

The Lever Room™ works at the intersection of innovation and sustainability, helping clients to optimise, measure and scale positive impact.


Rebecca has over 20 years experience building practical solutions and ventures that transform systems, creating win-wins for people, profit, nature and climate.

She was a founding team member playing a central role in helping to establish Sir Richard Branson’s B Team. She has also helped establish the not-for-profit initiatives Homestar, The Edmund Hilary Fellowship and Te Awaroa: Voice of the River


Rebecca has worked across scales, countries, and sectors. Through her career, which started in biosphere science,  she has come to believe that there is a need to apply a both data driven and systems thinking approach to create the most impactful solutions. She has a unique grasp of the multiple disciplines necessary to be able to see, holistically, the systemic challenges we face. This gives her the perspective to identify leverage points, unlocking regenerative, profitable outcomes.   

Rebecca holds a:

  • Certificate in Impact Measurement from Saïd Business School, University of Oxford, 2019.

  • Certificate in Disruptive Innovation and Strategy from Harvard Business School (HBX), 2018

  • Master of Science and Technology, First Class, First Division, from Waikato University, 2000.

She is a Member of Global Women, and the Institute of Directors, New Zealand.


Rebecca dedicated two years helping shape and build the startup which is now known as The B Team. The B Team is a global initiative, co-founded by Sir Richard Branson and Jochen Zeitz, which ambitiously put, seeks to change the way the world does business. As the first person involved full time on the start up, Rebecca worked closely with the global advisory board that she had helped bring together. Along with fellow advisors she framed initial discussions and thinking that defined areas of focus for The B Team. These focus areas are now communicated as 10 ‘challenges’, together create the Agenda of Plan B.

Homestar is the world’s first independent tool to rate the sustainability, health and comfort of homes. In the video above Jane Henley of The World Bank Group, gives her insight into both the development of ‘Homestar’ and her personal experience working with Rebecca to build it.

Prior to launching The Lever Room™, Rebecca led the impact evaluation and sustainable design process for a number of large-scale masterplans and infrastructure projects across London and South East England during a period of rapid growth in the Thames Gateway region. During this time she played key roles in both the regeneration of Greenwich Peninsula, and the development of the Sustainability and Energy strategies for the London 2012 Olympics. Rebecca had previously led the assessment of coastal and renewable energy projects including geothermal, hydro and wind in the Waikato Region, New Zealand.

  • Rebecca is interested in the idea of New Zealand being a ‘purpose-led innovation nation’ and has played a central role in building bridges to connect world-class talent, impact capital, and high-tech innovation to the New Zealand startup ecosystem.

  • Rebecca has acted as a mentor for numerous change making programmes including the renowned ‘Unreasonable Labs’ accelerators for early-stage entrepreneurs devoted to solving the world's biggest problems.

  • Her work coaching young people has resulted in her being the first person in New Zealand to be selected as a 'Global Shaper' by the World Economic Forum. Once selected she went on to curate and build New Zealand's first Global Shaper Hub, in Auckland.