Our Team


Julie Adams

Julie Adams has spent over 20 years working in the management consulting industry focused on the oil and gas sector, including several years working at an international oil company. She currently holds a leadership position in the consulting firm Accenture, leading a global Resources and Energy Research team. Her career has involved a focus on strategic analysis, risk assessment and people development, as well as a deep understanding of the external factors which can drive and shape the development of any business or public sector organisation. Julie is actively involved in training and education in her current role, and has some experience of teaching early in her career, including a year spent teaching in Bordeaux, France. She holds a post graduate qualification in Information Technology and Business Studies, as well as a Joint Honours Degree in French and History from the University of Warwick.

Marissa Davis

Marissa worked for many years at a senior level in GDST - the Girls Day School Trust. She has served as a senior school improvement adviser in the head office in London, on the Board of one of the London schools and has been a Head of a Primary school in Wales and Deputy Head of the senior section of the same school. For three years, Marissa also worked for GST, in school improvement and in managing cross-Trust events and projects such as the Science Symposium and Founders Day. She brings to the corporate governance of GST a practical understanding of and commitment to GST’s vision and values.

Trevor Edinborough

Trevor has many years of experience in the education sector and in school improvement, working across the public, private and charity sectors. He has worked extensively in the UK as well as internationally. He was a successful headteacher in two very different inner-city comprehensive schools and has had wide ranging experience in the delivery of local authority services at Assistant Director and Deputy Director levels. In addition, Trevor has significant international experience in the delivery of major education priorities and has a successful track record in the development and delivery of national government contracts. Having been instrumental in the progress the Trust as part of its Executive Team during its early years, Trevor has returned to Chair the GST Board.

Mike McCreedy

Mike McCreedy has a career which includes over 30 years of public sector experience. In addition to this Mike has held senior roles at the Commission for Racial Equality and the BIG Lottery Fund. Mike is now retired and is currently a governor at a local sixth form college and a secondary school, as well as Chairing the Perry Wood Local Governing Body for the Trust. Mike is dedicated to the GST vision and values.

Margaret Upama

Margaret is a retired teacher who taught at and was a member of the Senior Leadership Team of Church Mead Infant School, and was working at the school when it was rebuilt and became Riverley Primary School. Having been part of Riverley since it opened, Riverley is very close to her heart. She has served on and continues to be a member of the East London Local Governing Board to develop the school using her experience, skills and knowledge. Margaret’s experience ranges from working in Children’s Homes, to teaching in schools, to being a Professional Tutor at the University of East London. Her expertise are in Mathematics, where she holds a Masters Degree in Mathematics Education. Now retired, Margaret enjoys handcrafting, reading and writing.