Originally from Northampton, Stewart now lives in Lane End near High Wycombe with his wife, Isobel. Both have retired from careers in healthcare, one as a theatre sister and the other as a part time non-executive director within the Buckinghamshire NHS system until 2016 – within hospital services, primary care and commissioning. Stewart combined his NHS roles with a parallel career in human resource management consultancy, during which he specialised in employment law, psychometrics and training. He has worked on HR issues within private and public businesses, including charities, improving the way in which people perform to the best of their ability, at work. He is an advocate for close working between healthcare and local authorities and believes that nowhere is that connection more important than when caring is involved – hence his interest in Carers Bucks and Carers Milton Keynes. He is also involved in protecting local green spaces in and around Lane End.