James Clarke

Finance Manager

James has been a director of numerous companies involved in fruit farming, marketing and property. He joined CHASE Africa in 2016 to look after the accounts.

Mariana Díaz

Development & Operations Manager

Mariana brings more than 15 years' experience in the international development sector working in multicultural environments.

Poppy Dickinson (on maternity leave)

Communications & Engagement Coordinator

Poppy joined CHASE in 2021 and has several years of experience in communications within the international development sector.

Harriet Gordon-Brown

Chief Executive Officer

Harriet joined CHASE Africa in 2020 as Programme and Partnerships Manager and became our Chief Executive Officer in June 2022.

Jo McClellan

Programmes and Partnership Manager

Jo has worked for Ikamva Labantu in Cape Town, South Africa for the past 10 years. She is a specialist Fundraising and Programme Manager with 12 years’ experience.

Rory Macdiarmid

Corporate Fundraising Coordinator

Returning to Somerset from Africa in 2016, Rory joined CHASE Africa as a part-time fundraiser to address the unmet need for family planning.

Claire Nicholls

Fundraising & Project Officer

Claire has a degree in Development Studies from the University of East Anglia and joined CHASE Africa as a Fundraising and Programme Officer.

Robin Witt

Founder

Following many years spent visiting and living in Kenya, and seeing first hand the devastating effects of rapid deforestation, Robin set up the Rift Valley Tree Trust (RVTT) in 2000.

Brandon Quentin-Hicks

Communications & Engagement Co-ordinator

Brandon has many years experience working in the charity sector and has been involved with numerous successful marketing and engagement campaigns.

Francis Omondi Kadiri

SRHR Regional Manager

Francis has over a decade of relevant experience in Gender Equality and Social Inclusion (GESI) and the promotion of development outcomes. Francis is based in Nairobi and holds an MA in Development Studies

Miles Geldard

Chair of Trustees

With a successful career in the financial world and experience in humanitarian and conservation efforts in Africa, Miles joined CHASE Africa in July 2024 as Toby Aykroyd stepped down after 12 years of dedicated service.

Stephen Bown

Stephen Bown is Emeritus Professor of Medicine at University College London and directed a medical translational research group for 30 years.

Claire Maxey

After reading Philosophy, Politics and Economics at Oxford University, Claire started her career at PwC LLP working on corporate strategy and due diligence assignments.

Krupa Hirani Mehta

Krupa is the Treasurer for Chase Africa. She was born and raised in Nairobi and volunteered with a number of organisations around Kenya.

Matilda Mutanguha

Matilda is an experienced development consultant with a demonstrated history of working in the private and public sector across sub-Saharan Africa, Europe and North America.

Dossie Payne

Dossie was born and raised in Uganda. Her cousin founded CHAT, one of CHASE Africa’s Kenyan partners.

Tori Rumbold Wright

Tori is a medical anthropologist with a decade’s experience working in sexual and reproductive health across sub-Saharan Africa.

Oliver Whaley

Ollie is based at the Royal Botanic Gardens, Kew. He specialises in working with agricultural sectors.

Anna Campbell-Johnston

Anna has worked in the field of international development in Africa for over 20 years.

Dr Helen Carr

Helen has been a GP in the NHS for nearly 25 years and has a lot of experience in women’s health and family planning.

Julia Hailes

Julia is a sustainability pioneer, with over 30 years working in the green sector. She’s a campaigner, speaker, consultant and writer.

Mabel Kagonya

Mabel is passionate about enhancing safe environments that enable children, young people and vulnerable adults to thrive.

Margaret Makumi

Margaret has vast technical experience, expertise and competency in population and health programmes.

Sue Martin

Sue is a retired State Registered Nurse, who worked in Kenya for 17 years – in the foothills of Mt. Kenya, where she taught first aid and community health.

Bernard Onyango, PhD

Bernard is a Senior Research and Policy Analyst, and the BUILD Program Population, Environment and Development (PED) Director.

Alice Owen

Originally from Kenya, Alice’s career in wildlife conservation involved managing programmes to support jobs, education and livelihoods for people living around conservation hotpots.

Henry Pomeroy

Henry joined CHASE Africa in 2013 to become the charity’s first full-time Director, following a long and varied career in international development.

Mike Wheeler

Mike is a retired chartered civil and structural engineer who has lived and worked in Nairobi.

Edward Pycraft

Ed is Co-founder & MD of Keystone Legacy, a business for impact developing a sustainable, agritech initiative.

John Guillebaud

Emeritus Professor of Family Planning & Reproductive Health, UCL

Ex-Medical Director of the Margaret Pyke Centre for Study and Training in Family Planning, he is currently Research Director at the Elliot-Smith Clinic, Churchill Hospital, Oxford.

Professor Sarah Harper CBE

CBE Director of the Oxford Programme on Fertility, Education and Environment, Oxford University

Sarah served on the Prime Minister’s Council for Science and Technology.

Adrian Hayes

Adventurer, author, speaker and sustainability ambassador

Adrian is a British record-breaking adventurer, author, keynote speaker and sustainability campaigner.

Kevin McCloud

TV Presenter

Although best known for his TV series 'Grand Designs', Kevin has always been interested in environmental issues.

Sir Ghillean Prance

Former Director of Royal Botanic Gardens, Kew

Ghillean worked from 1963 to 1988 at The New York Botanical Garden.