Yorkshire Ambulance Service NHS Trust

Carol Weir

Director of Strategy, Planning and Performance

Dave Green

Executive Director of Quality and Chief Paramedic

Dave joined the executive team in November 2023. Dave began his ambulance career with West Yorkshire Metropolitan Ambulance Service (WYMAS) as a Patient Transport Service (PTS) driver in 1998 and went on to qualify as a paramedic in 2000. With a passion for clinical leadership, Dave has led teams as a clinical supervisor and clinical development manager before going on to deliver formal training courses as a clinical tutor. Dave introduced Quality Improvement (QI) to YAS as the head of QI between 2016 and 2018, then went on to join the PTS leadership team as the head of PTS service and standards. Dave has been a specialist advisor for the CQC and continues to teach as an honorary visiting lecturer at University of Bradford. In July 2021, Dave joined YAS's senior leadership team as associate director of quality and safety. Dave’s early career was in the armed forces, serving in the parachute regiment before carrying out operational leadership roles in the Middle East. Dave’s background in the military has driven him to set up the Trust’s Armed Forces Network, with the aim of offering support and comradeship for staff and volunteers of the armed forces community within YAS. He is passionate about developing people and empowering them to make improvements in their own areas of work.

David O'Brien

Director of Corporate Services and Company Secretary

Dr Shona McCallum

Executive Medical Director

• Shona qualified from St Thomas’s Hospital, London in 1993. She trained in respiratory and general medicine across the North West of England. • She completed her Medical Doctorate (MD) on the Epidemiology of Cystic Fibrosis, with research published in the Lancet. • Shona became a consultant in 2002, working in Rochdale Infirmary and the Heywood, Middleton, Rochdale locality for the last 20 years. • Prior to YAS, she worked as Medical Director at Rochdale Infirmary (Northern Care Alliance NHS Trust) from 2017, part of the award-winning integrated health and social care system in the locality. She was responsible for the clinical services provided on the hospital site and in the wider community and led on the integration of primary and secondary care for the Trust. • She has a Diploma in Palliative Care from Cardiff University and is interested in developing services for residents with non-malignant chronic illness. • She is a Trustee at Springhill Hospice in Rochdale.

Kathryn Vause

Executive Director of Finance

Kathryn joined YAS in 2017 as Deputy Director of Finance and was appointed to the post of Executive Director of Finance in August 2021. Kathryn is an experienced NHS finance professional, beginning her career in NHS finance 30 years ago when she gained a place on the NHS graduate finance training scheme. She has worked in senior roles across many healthcare sectors. Kathryn is a Member of Chartered Institute of Public Finance & Accountancy.

Mandy Wilcock

Director of People and Organisational Development

Mandy joined YAS in 2019 and became part of the Executive Team in June 2021. Mandy has over 30 years’ experience working in HR and OD across the NHS at national, regional and organisational levels in acute, primary, community, ambulance and commissioning sectors. Her most recent role was the Trust’s Associate Director of Corporate Affairs. Mandy is a Fellow of the Chartered Institute of Personnel and Development.

Marc Thomas

Deputy Chief Executive and Chief Operating Officer

Marc joined the executive team in April 2024. Marc has worked as a policy maker, analyst and senior leader across Government and the NHS. He was formerly the national lead at NHS England for ambulance and 111 services. He has undertaken varied roles in health, including on professional regulation, head of analysis for the Midlands and East NHS regions and Director of Hospital Hubs for the Covid Vaccination Programme.

Sam Robinson

Chief Digital Information Officer

Amanda Moat

Deputy Chair, Non-Executive Director

Amanda was appointed to the Trust Board in June 2021. Amanda is an experienced senior manager in risk, compliance and quality, with particular expertise in the financial services and legal sectors. She has advised on strategic matters including resourcing, diversification, product innovation, mergers and acquisitions, and change management. She currently holds a number of non-executive directorships, including The Mid Yorkshire Hospitals NHS Trust where she is the associate NED Safeguarding Lead, Bolton@Home and Arcon Housing Group. Amanda is a Director at Candam Ltd, a Taekwondo school, and a volunteer at Highfield School in Wakefield, a secondary school for pupils with complex needs, and at the Change Management Institute.

Becky Malby, BEM

Non-Executive Director

Katherine (Katie) Lees

Associate Non-Executive Director

Melanie Hudson

Non-Executive Director

Melanie joined the Trust Board in September 2025. • Melanie has spent more than 30 years working in the Further Education sector, with her most recent role (until 2019) as Deputy Principal at Kirklees College, which included a portfolio of HR and Organisational Development, Corporate Services and Marketing and senior officer for child and adult protection. • Until June 2025, she was a Non-executive Director at Airedale NHS Foundation Trust, chairing both the People and Quality committees, as well as having responsibilities as a board member for Freedom To Speak Up and as the Wellbeing Guardian. • She has also been a member of the Bradford District and Craven place-based board, chairing the People Committee for an 18 month period of time. • She is currently Chair of the Airedale subsidiary company, AGH Solutions, as well as being a long-standing trustee for Kirklees Active Leisure. She is passionate about health and well-being, both in her professional and personal life. • She has worked in areas focusing on inclusion and equality, starting in London, followed by roles in West Yorkshire. • She has a Masters Degree in Human Resource Management and is a member of the Chartered Institute of Personnel and Development (CIPD).

Michael Wright

Non-Executive Director

Michael joined the Trust Board in July 2026. • Michael has significant NHS experience and a wide range of leadership skills, particularly in financial management, procurement, audit, assurance and risk and charity governance. • He has worked within NHS Trusts for over 25 years, with 11 of these at Board level. • Michael was previously Managing Director at Barnsley Hospital NHS Foundation Trust, joining them in January 2025 from The Rotherham NHS Foundation Trust where he was Managing Director / Deputy Chief Executive since 2020. He previously worked at Barnsley Hospital as Director of Finance and has also spent time at Liverpool University Hospitals NHS Foundation Trust.

Rebecca Randell

Associate Non-Executive Director

Rebecca joined the Trust Board in February 2025. With over 20 years' experience in digital health, Rebecca is passionate about using technology to support the NHS in delivering better healthcare and achieving meaningful improvements for patients and staff. Rebecca gained leadership and management experience in a range of roles and enjoys mentoring, coaching and facilitating collaboration to help others develop and succeed. She is Professor of Digital Innovations in Healthcare and Director of the Centre for Digital Innovations in Health and Social Care at the University of Bradford, where she is committed to increasing the diversity of the NHS digital workforce and involving service users in technology design. She has varied experience of committee work at regional, national, and international levels, including for the National Institute for Health and Care Research and the European Federation of Medical Informatics.

Saghir Alam, OBE

Non-Executive Director

Saghir joined the Trust Board in February 2025. Saghir has a legal and business background. He is a Rotherham Borough Council Cabinet Member for Finance and Safe and Clean Communities. He has extensive experience in public sector leadership and governance locally and nationally and was awarded an OBE for public service in 2006. Saghir served three terms as a Disability Rights Commissioner and was an Equality and Human Rights Commission committee member. He was member of the Prime Minister’s Strategy Unit Expert Panel on Independent Living, Equality 2025 advising ministers/senior government officials on public policy in Whitehall, and the Lord Chancellor’s Consultative Committee. He is a former Non–Executive Director of Rotherham NHS Hospital Trust, lay advisor to the National Police Improvement Agency and expert member of the Youth Citizen Commission. He was appointed by the Foreign Secretary as Independent Governor at Westminster Foundation for Democracy.

Tabitha Arulampalam

Non-Executive Director

Tabitha joined the Trust Board in February 2025 as an Associate Non-Executive Director and became a Non-Executive Director in August 2025. Tabitha currently runs her own independent management consultancy business and is an organisational psychologist who has successfully supported organisations in their transformation journeys. She has worked in local government, the NHS and the third sector for more than 30 years with a successful track record of collaborative work. She has been a Non-Executive Director for many years, most recently for the Johnnie Johnson Housing Association and Wakefield District Community Foundation. She is a former commissioner of community and mental health services in Yorkshire, working with partner organisations to deliver improvements. Tabitha is also a member of the local parochial church council and the Leeds Synod.