Our trustees

Joe Sealy

Joe’s career has spanned the public and private sector. He is the Co-Founding Partner and COO of Greater Pacific Capital (GPC), an impact investment firm focused on sustainable investments in the area of financial inclusion, energy transition and digital inclusion on behalf of major pension funds and institutional investors. Joe serves on the Investment Committee and major firm committees and sits on the boards of many fund portfolio companies. 

Joe was previously a Managing Director in the Investment Banking Division at Goldman Sachs with corporate clients covering multiple industry sectors, financial investors, and government, and played a leadership role in promoting diversity at Goldman Sachs.  Formerly, was a partner at KPMG, in roles covering both private and public sector clients. Joe began his public service career within the local authority sector. He is the Non-Executive Chair of the Chartered Institute of Public Finance Accountants (CIPFA), prior to this he was a Senior Non-Executive Director and chair of the Commercial Board. Joe is a BSc graduate in Economics, MBA from Henley Management College, and CIPFA accountant. Amongst Joe’s many diverse interests he is a martial arts black belt in Aikido, a yoga enthusiast and keen scuba diver.

Kyush Modasia

Kyush is Finance Director – Group Financial Control at Peabody Group where he leads a team of 90 finance staff across the Group to help deliver on their vision and strategy and effectively support their social purpose. He previously held the role of Finance Director at Academies Enterprise Trust where he led the finance team through a complete turnaround plan – including a national finance restructure and overhaul of systems and processes. Before working in the housing sector, Kyush worked as a finance specialist in educational institutions for 9 years. Prior to this he was an Audit Supervisor at Buzzacott where he gained his ACA qualification and specialised in charity audit.

Miriam Keane

Miriam is the Public Affairs Advisor for the National Citizens Service Trust, having previously been Chief Brand Officer and CMO of the organisation. She has many years of experience with blue-chip brands, both locally and internationally. She was previously the Director of Marketing at British Gas and spent 5 years in New York as Chief Brand Officer for Weight Watchers (a £60 billion, NYSE-listed company) where she worked across global markets and was part of the team that launched the company in China. She had senior roles in leading advertising agencies, including Saatchi & Saatchi and Publicis, before moving client-side. Miriam is also a Trustee of Target Ovarian Cancer and Leukaemia UK, where she Chairs the Development Committee. She has a Masters in English from Trinity College Dublin.

Peter Hyman

Peter is co-founder of School 21, a 4 to 18 school in East London and co-founder of Voice 21 which developed from the exciting practice at School 21.  In a former life he was a strategist and speechwriter for Prime Minister, Tony Blair.

Sarah David

Sarah is a Board Chair, NED and management consultant. She has been working with executive leaders for 25 years to clarify strategy, accelerate leadership impact and nurture positive culture. She became the first Chair of Voice 21 in 2021 and is Chair of Dazzle & Fizz, a creative events studio working with global brands on multi-generational engagement, and the sole NED of Bates Wells, the first B Corp law firm. As well as being a qualified lawyer, Sarah has an MBA and an MSc with research on executive wellbeing. Sarah is a standing judge on the UK Social Mobility Awards.

Sarah Kaiser

Sarah Kaiser is Head of Employee Experience at Fidelity International with responsibility for driving Fidelity’s strategic agendas around Diversity & Inclusion, Wellbeing, Employee Engagement, Flexible Working and the Employee Value Proposition. Previously to joining Fidelity in 2019, Sarah has led diversity and inclusion efforts for organisations in the technology sector, local government and the arts. Prior to that, Sarah was the Director of RenéCassin, an international human rights NGO. She is passionate about creating cultures where everyone can thrive.

Simon Coyle

Simon is Head of Philanthropy at XTX Markets, an algorithmic trading company headquartered in London. The company’s philanthropy focuses on excellence in maths and science education, and on supporting the development of global talent. Prior to joining XTX Markets, Simon started his career as an economics and history teacher in an inner-city school. He then left the classroom to co-found The Brilliant Club, a university access charity that mobilises PhD researchers to work as tutors in state schools. As well as Voice 21, he also sits on the board of the Martingale Foundation and the Teach for All Network.