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Our Board

Members of the NHSBSA Board

The NHSBSA Board usually meets 8 times each year. 

Silla Maizey, Chair

Silla is an accountant by profession. She joined the NHSBSA from British Airways, where she had worked in a number of different functions over the years including Finance, Procurement, Corporate Responsibility and Customer Services, but most recently as Managing Director of Gatwick. Alongside her duties at the NHSBSA, she is also Chair and Non-Executive Director of the British Airways Retirement Plan, which is a pension scheme for over 13,000 members.

Silla Maizey

Mark Ellerby, Non Executive Director, Chair of the Remuneration Committee and Senior Independent Director

Mark was formerly Divisional Managing Director of Bupa Care Services, globally responsible for providing residential care home services, retirement villages, assisted living facilities, medical alarm systems and nurse led home healthcare to over 50,000 customers. Before that Mark held a wide range of senior roles within Bupa, both in general management and in finance and strategy, and prior to that worked for ten years at Deloitte in London. Mark is a Fellow of the Institute of Chartered Accountants of England and Wales.

Mark Ellerby

Andrew Flanagan, Non Executive Director, Chair of the Audit and Risk Management Committee

Andrew is a Civil Service Commissioner and holds a number of non-executive appointments, including with the Criminal Injuries Compensation Authority and CIPFA Business Services Ltd. Until March 2013, he was Chief Executive of the NSPCC, the leading UK children’s charity and in 2015 he was appointed Chair of the Scottish Police Authority. Previously, Andrew was Chief Executive of SMG plc; one of the UK's leading media companies with interests spanning television, radio and print. A Chartered Accountant, Andrew has also held a number of senior finance roles in the media, IT and telecommunications sectors.

Andrew Flanagan

Debra Bailey, Non Executive Director

Debra currently works full-time at Nationwide Building Society as Chief Information Officer and Divisional Director for IT and Group Security. Before joining Nationwide, she worked at British Telecom (BT) where she held a number of executive leadership roles. The majority of Debra’s career has been working in financial services where she held a number of senior roles at both Barclays and Woolwich plc.

Debra Bailey

Tim Nolan, Non Executive Director

Tim is an experienced international board director and consultant having worked across the retail, telecoms, healthcare, housing, consumer electronics and automotive sectors. He has held senior commercial, marketing, e-commerce, supply chain and business development roles over more than 25 years within large multi-national organisations. These include Tesco, Staples, Samsung, DixonsCarphone, Courts Asia and Jaguar Cars. He has also worked as a consultant with other blue chip businesses such as B&Q and Best Buy. He has previously held non-executive directorships in the housing sector and for an NHS Hospital Trust.

Tim Nolan



Karen Seth, Non Executive Director

Karen currently works full-time at the Co-op as HR Director Retail Operations. Before joining the Co-op, Karen worked at Sainsbury where she held a number of senior leadership roles within HR across both generalist and specialist disciplines. Karen is a fellow of the Chartered Institute of Personnel and Development and is also a trustee of the North East Law Centre.

Karen Seth

Alistair McDonald, Chief Executive

Alistair is responsible for managing the business of the organisation and providing leadership on strategy and development. He was previously Director of Operations, responsible for the operational performance of all business streams across the NHSBSA. He is a member of the Chartered Institute of Management Accountants and the Chartered Institute of Personnel and Development.

Alistair McDonald

Patrick McGahon, Executive Director of Finance and Commercial

Patrick leads the NHSBSA's financial, corporate and property services and is responsible for the organisation's financial strategy. He has worked at board level in the NHS and not-for-profit sectors for the last 20 years leading strategic change, financial strategy and turnaround. He is a graduate member of the Chartered Institute of Public Finance Accountants and MBA.

Patrick McGahon

Mark Dibble, Executive Director of Corporate Services and Corporate Secretary

Mark was appointed to the Board in September 2017 having joined the NHSBSA as Corporate Secretary, a role which he retains.  Within his role, Mark supports the Board and his Executive colleagues and is responsible for key areas such as governance, risk, HR, organisation development, communications, information security, and health and safety. Mark has over 20 years’ experience across health in both the private and public sector, working in NHS provider and commissioner organisations.


Mark Dibble

Supporting the Board

The Board is supported by David Jukes, the NHSBSA's Head of Risk and Assurance.





About the NHSBSA Board

View the latest register of interests declared by members of the NHSBSA Board