Our Team

Paul Gunstensen

Director of WASH

Paul joined the Foundation as the Director of WASH in October 2015 and brings over 10 years’ experience in the global water and sanitation sector. Paul’s experience to date has bridged both rural and urban programming and his strength is connecting people, ideas and finance in a strategic way.

Prior to this, Paul worked at Water & Sanitation for the Urban Poor (WSUP) where he played a key role the development of the organisation over seven years, latterly as the Director for Partnerships & Development in charge of strategic partnerships and communications. A key part of this was a focus on the development of market-based solutions in WASH, with Paul playing a leading role the development of WSUP’s work in this area. Paul started his career at WaterAid where he spent over four years supporting their African, South Asian and Pacific programmes.

Sarah Hedley

Head of WASH programmes

Sarah joined the Foundation as Head of Programmes in November 2015.

Sarah previously spent six years at New Philanthropy Capital, a think tank and consultancy, advising charities and funders on their strategy and impact. Prior to that, Sarah worked for Intelligent Giving, a website that assessed the transparency and reporting of the top 500 UK charities.

Souraya Chenguelly

Programme Manager

Souraya joined the Stone Family Foundation in June 2017 as WASH Programme Manager, after having spent four years at Water and Sanitation for the Urban Poor (WSUP) where she worked in finance and donor relationship management.

Prior to this, Souraya spent three years at InterAide, a French NGO, supporting its rural WASH and health programmes in Malawi. Souraya has a background in economics and finance and started her career as a financial auditor.

UK portfolios

The Foundation’s mental health and disadvantaged youth portfolios are managed by NPC.

NPC is a charity think tank and consultancy that occupies a unique position between charities and funders, helping them achieve the greatest impact. It has extensive experience of working with clients and undertaking research in both the mental health and youth sectors.

Find out more about the team on the mental health and disadvantaged youth pages.