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Technical Team

Marie McGrath
ENN Technical Director

Marie has been a Technical Director with ENN for 17 years and is also a member of ENN’s Board of Trustees. Marie is the longstanding Co-Editor of ENN’s flagship technical publication, Field Exchange, overseeing significant growth in its impact, readership and authorship. Marie is ENN’s technical lead on a growing portfolio of work on the management of at risk mothers and infants under six months (MAMI) including on process evaluation of an upcoming randomised control trial in Ethiopia in a LSHTM/GOAL/Jimma University partnership. Marie is Chair of the Advisory Board of the Eleanor Crook Foundation (ECF) and also the coordinator of an established UN/NGO interagency collaboration on infant and young child feeding in emergencies (IFE Core Group), co-chair of the Wasting Thematic Working Group of the Global Assistance Mechanism on Nutrition (GTAM), and a member of the Council of Research & Technical Advice on Severe Acute Malnutrition (CORTASAM) of the No Wasted Lives Initiative. Marie leads on, and contributes to, a wide range of normative (WHO) and programmatic guidance, such as HIV and infant feeding, HIV and infant feeding in emergencies, breastfeeding and ebola virus disease, breastfeeding and zika virus and Operational Guidance on infant feeding in emergencies.

Prior to joining ENN, Marie studied Human Nutrition and Dietetics at Trinity College, Dublin, from where she began her career as a Senior Paediatric Dietician before working for several years in the field as an Emergency Nutritionist with Merlin and Research Nutritionist with UCL/Centre for Global Health and Save the Children. Her ambition through all her workstreams is to nurture practical common ground across Humanitarian and Development programming and sectors and to continue to learn – to that end, she is a part time PhD student at the London School of Hygiene and Tropical Medicine linked to her MAMI work portfolio in Ethiopia.


Tanya Khara
ENN Technical Director

Tanya joined ENN in 2017 bringing with her more than 20 years’ experience as a Public Health Nutritionist spanning University research contexts, INGOs, Valid International, the UN, UK government, and as an independent consultant. She has an MSc in Public Health from the London School of Hygiene and Tropical Medicine and a BA in Human Science from Oxford University.

Tanya is driven by a desire to better shape and translate research into doable, effective and equitable programmes. As an integral member of the research team responsible for developing Community-based Management of Acute Malnutrition (CMAM) and subsequently driving the uptake of the approach within UNICEF, she was able to do exactly that. She subsequently broadened her focus, developing a number of technical reviews, exploring neglected areas in international nutrition, including maternal and adolescent nutrition, and the relationship between wasting and stunting, always highlighting key opportunities for improvements in programming and policy. At present, Tanya is ENN’s technical lead on our body of work on the relationship between Wasting and Stunting, including our USAID supported study in West Africa, the knowledge management and monitoring of the Global Technical Assistance Mechanism for Nutrition (GTAM), with whom she works closely with partners in UNICEF and World Vision, and also leads ENN’s resource forum for field practitioners,  en-net.


Emily Mates
ENN Technical Director

Emily has worked for over 20 years in international public health and nutrition programming. Emily has been an ENN Technical Director for 9 years where she leads several technical areas including Adolescent Nutrition and Stunting in Emergencies as well as our knowledge management work supporting the Irish government in donor decision making for nutrition. Since joining ENN, she has managed monitoring and evaluation for the organisation. Emily was ENN lead in Ethiopia to deliver a highly successful conference to capture government experiences of scaling up community based management of acute malnutrition.  She has particular interests in bridging the (sometimes artificially divided) sectors of nutrition and health, and in supporting governments to develop strategies and policies for longer-term solutions to the problems of malnutrition.

Prior to working in the international public health field, Emily trained as a nurse at St Thomas’ Hospital, London and started her career with 8 years working in paediatric, psychiatric and HIV/AIDS units in the UK and Australia. She then held a senior healthcare position in H.M. prison service, where responsibilities included public health safeguarding for 650 male inmates.  Emily moved to Ethiopia in 2000, living and working there for 11 years for International NGOs as well as UN and donor agencies as an independent consultant. Here she gained broad-ranging country level experience of health service delivery and systems including nutrition, universal health care and community programming initiatives. She has an MSc in Public Health from the London School of Hygiene and Tropical Medicine.


Natalie Sessions
Senior Nutritionist

Natalie works with ENN as a Senior Nutritionist.  Natalie has recently been responsible for the global coordination of ENN’s Knowledge Management work for the Scaling Up Nutrition (SUN) Movement. Perhaps the most significant of her responsibilities has been to oversee the development of a portfolio of case studies on sub-national, multi-sector nutrition programming. Natalie is part of the ENN team supporting knowledge management of the GTAM on nutrition and COVID-19 while working across several of ENN’s portfolio including co-authoring an ENN position on wasting in the context of undernutrition. She has particular interests in Wasting and Stunting, the Humanitarian and Development nexus of Nutrition programming and in situating Nutrition within the broader Humanitarian and Development landscape.

Natalie has an MSc in Public Health Nutrition from the London School of Hygiene and Tropical Medicine. Before joining ENN, she worked internationally for Concern Worldwide as an Emergency Nutrition Programme Manager, spending most of her time in South Sudan and Bangladesh, with Action Against Hunger UK and held nutrition roles with Philani Maternal Nutrition centre in South Africa and GOAL Ethiopia. Prior to this, Natalie worked in the field of HIV/ AIDS in Southern Africa.


Natasha Lelijveld
Senior Nutritionist

Natasha is an ENN Senior Nutritionist working across ENN’s portfolio, with specific focus on Adolescent Nutrition, MAMI, Concurrent wasting and stunting (WaSt), and a new project on food systems.

Natasha completed her PhD at University College London, where her research considered the long-term effects of severe acute malnutrition in Malawi ( She continued her research at the London School of Hygiene and Tropical Medicine (LSHTM) exploring interventions for the management of at-risk mothers and infants less than 6 months (MAMI) ( and adolescent stunting. Natasha also spent time at the Hospital for Sick Kids in Toronto where she studied alternative treatment options for children with moderate acute malnutrition ( and She also taught the "Nutrition in Emergencies" course for Masters students at the University of Southampton. Besides academia, Natasha has spent time working in a policy-steering position within the No Wasted Lives initiative at Action Against Hunger supporting research projects in Bangladesh, South Sudan, Kenya, and Mali. 


Chloe Angood
Nutritionist and FEX sub-editor

Chloe is a Public Health Nutritionist and has worked with ENN for the past 12 years across several key technical areas. She is Field Exchange Sub-Editor and is part of the ENN team providing real time knowledge management support on COVID 19 and nutrition to the GTAM. Chloe has implemented and co-authored global research prioritisation exercises on MAMI, the links between wasting and stunting and wasting prevention and, most recently, co-wrote a forthcoming paper on ‘ENN’s position on wasting in the context of undernutrition’.

Prior to ENN, Chloe had several years’ experience working in African countries in development and nutrition programming, including on the quality of inpatient management of severe acute malnutrition and development of national guidelines in Tanzania. She holds a MSc in Public Health Nutrition from the University of Southampton and Master’s and Bachelor’s degrees in Development Studies. Chloe is also an ABM qualified breastfeeding counsellor and supports breastfeeding counselling and training to women with young infants in North Wales.


Kelsey Grey
MAMI Specialist

Kelsey works with ENN as a MAMI Specialist.  She has responsibility for managing the update of the MAMI Tool (pathway of care), a key programming resource to identify and manage at risk mothers and infants under six months of age (MAMI). This involves coordinating programmers and researchers across several specialities including nutrition, paediatrics, early childhood development and maternal mental health. Kelsey joined ENN from LSHTM where she completed her MSc in Nutrition for Global Health and subsequently worked as a Research Assistant.  Prior to this, Kelsey was a Technical Advisor at Nourish Global Nutrition working on nutrition research and programming in the Pacific Islands and Nigeria in consultation with UNICEF. She has also held different research roles with UNICEF in Burundi and Rwanda.
Gwénola Desplats
Nutrition Advisor

Gwen works with ENN as a Nutrition Advisor. She provides surge sub-editorial support to Field Exchange and as a native francophone, engages on translation quality assurance and French en-net. Building on her considerable experience of working in West Africa, she is supporting ENN to refresh and develop our francophone approach, including our regional and country level engagement, reach and content generation for our future strategy. 

Gwen gained her MSc in International Nutrition from Tufts University in 2001. Since then she has worked in senior Nutrition roles in regional and country positions with several agencies including UNICEF and the UN World Food Programme. She has a particular interest in Infant and Young Child Feeding (IYCF), Vitamin A supplementation and the generation, management and curation of knowledge for different audiences, including through the design and implementation of large-scale surveys and research projects.

Technical Associates

Anne Bush

Anne has more than 20 years’ experience in public health and nutrition at global and country level in humanitarian and development contexts. She has worked in a wide range of countries including Kenya, Somalia, Mozambique, Tanzania, Ethiopia, Indonesia and the UK. She has significant experience in policy and strategic development, programme design, development of technical guidance and tools, monitoring and evaluation, quality assurance and research. During her career, she has provided technical assistance to donors, governments, UN agencies and NGOs. Specific areas of interest include multisectoral approaches to addressing malnutrition, bridging the humanitarian – development divide, the integration of nutrition and health through system strengthening, and community-based approaches. Anne’s recent work with ENN has included developing a case study on Zambia's experience with the 1,000 Most Critical Days Programme and editing of Field Exchange. Prior to her work in international public health and nutrition, Anne studied dietetics at Leeds University and worked in the National Health Service as a Metabolic Dietitian. Anne then worked for three years as a nutritionist in Indonesia, from where her career continued in the international field. Anne has an MSc in Public Health from the London School of Hygiene and Tropical Medicine.


Bridget Fenn

Bridget is an epidemiologist (MSc Epidemiology, LSHTM) with a background in nutrition (MSc Nutrition, King’s College, London). Bridget has 25 years’ experience in the development and humanitarian sectors working for national and international agencies in operational, political and academic capacities on child and maternal nutrition and health and environmental projects. She has been a consultant with ENN for over 8 years and has headed research programmes in Niger and Pakistan (REFANI-Pakistan). She is currently analysing data looking at the impact of interventions aimed at wasting, on stunting. She is also a consultant in Nutrition Epidemiology and Research for the Multi-Donor-Action ‘Capacity 4 Development (C4N)’ where she is responsible for monitoring and depicting stunting trends in the EC’s priority countries for nutrition, providing guidance on research methods and current scientific knowledge to identify emerging innovative approaches and supporting the EC EU Delegations on the design of country-level research and evaluations.


Edna Ogada

Edna has worked in the public health and bio-medical sectors for over 20 years in the United States, Kenya, Tanzania and the United Kingdom. Edna is ENN’s Senior Researcher for the Wasting-Stunting (WaSt) Study and she is also working on an ENN review of the impact of global multi-sectoral nutrition programs. Edna has extensive experience in collecting, managing and analysing health monitoring and surveillance information including setting field-based data collection systems. She is an author in over ten peer-reviewed journal articles, many from her tenure as data manager for the Malaria, Immunology and Epidemiology Group at the Oxford University Tropical Network site at the Kenya Medical Research Institute. Edna previously led the research department at Population Services International Kenya, where she was responsible for supporting interventions by designing and implementing studies that provided evidence useful for designing, monitoring and evaluating social marketing programs. In her last position at Swansea University Edna oversaw studies on the epidemiology and aetiology of burn injuries in Nepal, Ethiopia and the Occupied Palestinian Territories. Edna completing her master’s degree in Public Health from Tulane University in New Orleans, Louisiana in 1999.


Kate Sadler

Kate is a public nutritionist with over 20 years of experience in the design, management, evaluation and research of nutrition interventions in Africa and Asia. She is currently ENN’s Study Coordinator and co- Principal Investigator for the Wasting-Stunting Study. Kate has previously worked as a program nutritionist in several countries in Africa, including Ethiopia, Malawi, Sudan, Rwanda and Burundi and has extensive applied research capacity in the area of nutrition and food security. Kate gained her PhD in nutrition from UCL and was an integral part of the team responsible for the multi-country research on which the adoption of the CMAM approach (for the community-based management of acute malnutrition) was based. She has led many projects including the community case management of severe acute malnutrition in Bangladesh; linking livestock interventions to child health and nutrition in pastoralist areas of Africa; and the strengthening of nutrition across multi-sectoral programs (including HIV, health and livelihoods) in Ethiopia.  She also supports the EU’s Nutrition Advisory Service on programme and research related issues.


Linda Shaker Berbari

Linda Shaker Berbari is an expert in community nutrition with more than 15 years of experience in Lebanon and internationally. Linda earned her master’s degree in Nutrition from the American University of Beirut and her PhD from the University of Dundee, Scotland, with a focus on Infant and Young Child Feeding in Emergencies. She is the facilitator of the Infant Feeding in Emergencies Core Group, a global collaboration of agencies committed to infant feeding in emergencies hosted by the Emergency Nutrition Network. Linda is a co-founder of a breastfeeding NGO and a member of the Technical Advisory Group on infant and young child feeding for the Ministry of Public Health in Lebanon. Her research interests include infant and young child feeding in emergencies, school nutrition, and public heath nutrition policy.


Mark Myatt

Mark is a consultant epidemiologist and is currently working with ENN as co-Principal Investigator for the Wasting Stunting Study. His areas of expertise include nutritional epidemiology, surveillance of communicable diseases, epidemiology of communicable diseases, spatial epidemiology, and survey design. Mark has undertaken work for the governments of the UK, USA, Ethiopia, Zambia, Malawi, Nigeria, and Sudan; the UK National Health Service and Public Health Laboratory Service; the Scottish Centre for Infection and Environmental Health; CDC (Atlanta); United Nations Organisations such as WHO, UNICEF, UNHCR, and WFP; ASEAN; and International NGOs such as Save the Children, CONCERN Worldwide, GAIN, GOAL, OXFAM, MSF, ACF/AAH, Merlin, FANTA, and VALID International. Mark has taught at several UK Universities (London (UCL, ICH, IoO, and LSHTM), Oxford, Liverpool, Manchester, and Glasgow) as well as at national schools of public health in Belgium, Estonia, Czech Republic, Portugal, Spain, Sweden, Switzerland, and the USA. Mark has authored several textbooks on epidemiology, statistics, and computing; a reference on food-borne disease; several computer programs for epidemiology and biostatistics; and has published over fifty articles in scientific and professional journals. In addition Mark has worked in many complex humanitarian emergencies over the past twenty-five years.


Tamsin Walters

Tamsin specialises in public health nutrition and food security technical support, analysis and policy and strategy development, as well as providing broader strategic thinking and support to multi-sectoral humanitarian programming approaches. With experience in 29 African and Central and Southeast Asian countries over almost 20 years, her knowledge includes a comprehensive understanding of development policy within global, regional and community contexts. Tamsin is the moderator for ENN’s online technical forum, en-net, and is currently undertaking work to develop this forum. She also works on other projects for ENN and is continuously engaged in improvement of the knowledge base for nutrition through involvement in global technical meetings and research publications. In addition to her position with ENN Tamsin is a partner in NutritionWorks, and an Honorary Lecturer at Bristol University. Previous organisational affiliations include Concern Worldwide, Action Contre la Faim (ACF) and Action Against Hunger UK, Oxfam, CAFOD and Caritas Internationalis.


Zakari Ali

Zakari is a research professional with a MSc in Nutrition for Global Health from the London School of Hygiene & Tropical Medicine (LSHTM). He has extensive training and skills in public health nutrition, epidemiology, medical statistics, maternal and child nutrition, nutrition in emergencies and nutrition-related chronic diseases. Zakari has a special interest in adolescent nutrition and nutritional epidemiology and is currently working as a researcher for ENN’s Adolescent Nutrition Mapping exercise. He previously worked as a Research Assistant in Ghana with the University for Development Studies and currently does research on West African food system adaptations to climate change with the Medical Research Council (MRC) Unit, The Gambia Unit, at LSHTM.

Operations Team

Rebecca Lewin
Operations and Finance Director

Aimee Keeble
Project Manager

Megan Titchell
Project Manager

John Withey
Finance Manager

Joanne Parsons
Senior HR Officer

Judith Fitzgerald
Office Manager and HR Officer

Clara Ramsay
Finance Assistant

Annabel Miller
Project Officer

Laura Delfino
Administrative Officer


Board of trustees

Dr Bruce Laurence is Director of Public Health in Bath and North East Somerset, UK. He previously worked as a Consultant in Public Health, the Medical Director of the medical UK-based NGO, Merlin and has also worked with Oxfam and MSF.



Nigel Milway is a former British Telecom senior executive, Nigel is Head of Coaching at First Ascent - specialising in executive, leadership and career development.




Anna Taylor is Executive Director of the Food Foundation, with many years experience working in international nutrition and an OBE for her work to address the global burden of undernutrition.




Marie McGrath. In addition to her role as Technical Director for ENN, Marie McGrath is an (executive) Trustee on the Board and has held this position since 2006.




Dr Graham MacKay is Bond’s chief operating officer. He has a background in humanitarian work where he has worked in over 20 different countries and crises as well as a background in scientific research where he has a PhD.




Dr Jane Cocking has 25 years’ experience in the humanitarian sector and has responded to multiple crises across the world. She worked for the ODA and Save the Children before spending almost 20 years with Oxfam GB. She was Chief Executive at The Mines Advisory Group from 2017 to 2020.


Reference this page

Chloe Angood (2014). Our team.



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