Sarah's technical expertise and her in-depth knowledge of reproductive health issues combined to great effect for the review that she undertook in 2015 for the Population Council and FP2020 on Contraceptive Discontinuation. Sarah was extremely organized in undertaking the review, delivered a high quality product on time, and was a joy to work with; I can unreservedly recommend her for consultancy.

Dr Ian Askew
Director, Reproductive Health and Research, Human Reproduction Programme. World Health Organisation.

Sarah Castle provided the International Planned Parenthood Federation (IPPF) with on-point insights and knowledge that helped us to institutionalize our humanitarian programme. Now up and running, IPPF is a leader in delivering high quality comprehensive sexual and reproductive health and rights within hours of a crisis striking. Sarah made a critical contribution to realizing the transformation.

Matthew Lindley
Director of Resource Mobilization/Humanitarian Transition Lead, IPPF

We engaged Sarah as we wanted to improve access to family planning for adolescents in Senegal and Burkina Faso through MSI service delivery models. When it got to the in-country work, she largely self-managed the research, organised youth focus groups and in-depth interviews and produced some clear recommendations which contributed to our Sahel adolescent strategy. With Sarah, you get someone who brings a lot of experience and prior knowledge which is very valuable. She is a strong researcher, someone who understands the cultural context and operational realities, who speaks French and who is comfortable working in the region. For us, this was a very powerful combination.

Sue Holland
Regional Director, Marie Stopes International, West and Central Africa

Sarah Castle is a gifted researcher with a strong record of important published findings. She has unrivalled consultancy experience in West Africa.

John Cleland
Professor of Medical Demography, London School of Hygiene and Tropical Medicine

Working with Sarah in Zambia was a real pleasure. She is hard working, flexible, and passionate about her work. Her writing is excellent. I would recommend her for a consultancy without hesitation.

Emily Hughes

I had the pleasure of working with Sarah on a project in Orissa, India. Sarah was an invaluable help to our team and the project. She always delivered quality outputs and working with her was a pleasure. Sarah has a great attitude and work ethic.

Robert Mulhall
Innovations Implementation Manager at Concern Worldwide US

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