Quiller has over 15 years of experience generating and using information on impact to drive better decisions. He is currently Head of Impact at Gatsby Africa, based in Nairobi. Gatsby works in partnership with Governments and private firms to support the economic transformation of sectors in East Africa, deploying a range of mechanisms from investments to policy advisory.
Prior to Gatsby, Quiller worked for PwC’s sustainability and climate change team in London where he was instrumental in the development of PwC’s approaches to measuring and valuing corporate environmental impacts and deploying these with a range of clients. Notable amongst these was Kering, where from 2011 to 2016, he led the day-to-day development of the Environmental Profit and Loss and its integration into Kering’s decision-making structures. Quiller was also part of the core team which extended the E P&L to include other types of impacts, becoming PwC’s Total Impact Measurement and Management framework. Quiller was also a lead author of the Natural Capital Protocol.