Dr Sarah Lewis, DCrimJ, MSc, BSc (Hons), FHEA, is the Founder and Director of Grow Transform Belong CIC, Director of Penal Reform Solutions, and a globally recognised leader in cultural transformation across criminal justice systems. She has worked and researched in frontline probation and prison environments since 2004, specialising in therapeutic correctional relationships, staff wellbeing, and organisational culture change.

Dr Lewis began her career in probation and psychological intervention, later training probation officers and teaching criminology and criminal psychology at the University of Portsmouth. Her work is grounded in deep experience, evidence, and compassion, and driven by a belief that safer and more humane systems are built on relationships, trust, and a shared commitment to growth.

She is the creator of the Growth Philosophy — a research-informed framework for transforming organisational culture that emphasises connection, learning, and human dignity, developed from pioneering research in Norwegian penal settings. This philosophy underpins international projects, leadership training, and the Growth Alliance network, which collectively aim to embed growth-centred practice in prisons, community services, and justice reform initiatives around the world.