Health Services Safety Investigations Body

Philippa Styles

Director of Investigations

She’s previously held senior leadership roles at the Care Quality Commission and more recently was the Director of Operational Delivery in a community healthcare organisation. Philippa seeks to continually grow as a healthcare leader and has successfully completed a master’s in healthcare leadership. She completed the Nye Bevan Programme for executive leaders in the NHS and believes compassionate, inclusive leadership supports everyone in the NHS to put patients and their safety at the heart of all we do. Philippa ensures that we continue to build diverse, highly skilled teams and deliver on our organisational vision, and empowers them to improve the safety of healthcare for patients and staff. Registered as a paramedic with the Health & Care Professions Council, since 2005. Last updated: 22 October 2025.

Stephen Carruthers

Finance and Resources Director

Before joining our team, Stephen served as Head of Finance at the NHS North Central London Integrated Care Board, where he played a key role to deliver the organisation's objectives whilst ensuring efficient use of resources. Throughout his career, Stephen has held key finance positions at several prominent NHS organisations, including the Royal Free London NHS Foundation Trust, NHS Islington Primary Care Trust, NHS London Strategic Health Authority and NHS Enfield Clinical Commissioning Group. His experience across various NHS bodies has equipped him with a strong understanding of NHS finance, strategic planning and financial governance. Stephen is the Senior Information Risk Owner (SIRO) for the Health Services Safety Investigations Body (HSSIB). He is a member of the Chartered Institute of Management Accountants (CIMA) and an affiliate member of the Chartered Institute of Public Finance and Accountancy. Treasurer, Trustee and Chair of the Finance, Audit, Risk and Governance Committee at Age Well East. Last updated: 1 June 2026.

Marc Esmiley

Non-Executive Director

He is a senior technology executive and board adviser with extensive experience leading digital, data and AI-driven transformation across highly regulated and safety-critical environments. Marc currently serves as Head of Product for Financial Services Industry within Microsoft’s Commercial Engineering division, where he leads product strategy and commercialisation for regulated cloud and data platforms supporting global customers. Marc’s expertise centres on risk governance and organisational change. He has strengthened regulatory and assurance frameworks within complex institutions, translated statutory and policy requirements into scalable operating models, and guided organisations through periods of structural transformation and portfolio rationalisation. His board and executive roles have focused on embedding clear decision rights, improving resilience, and ensuring that innovation is delivered within robust governance and risk boundaries. Non-Executive Director at VE3 Global, since December 2025. Head of Product, Financial Services Industry at Microsoft, since 2017 (shareholder related to employment). Former Trustee Director at St Andrews Hospice, Grimsby (April 2021 to April 2024). Former Trustee Director, The Mungo Foundation (March 2022 to March 2024). Last updated: 17 February 2026.

Marisa Logan-Ward

Non-Executive Director

With a background in biomedical sciences, Marisa has held senior roles in the health sector for over 20 years. Marisa began her career in academic research and then went onto various roles leading on key areas in the transformation of NHS diagnostic services. Marisa has worked for a range of organisations including the Department of Health, NHS trusts, global laboratory diagnostics providers and the UK’s largest independent hospital group. Marisa has been involved in national turnaround programmes on quality and patient safety and brings to HSSIB operational experience of improving safety in healthcare. She is currently a non-executive director and senior independent director at The Christie NHS Foundation Trust. Prior to joining The Christie, Marisa was a non-executive director and vice chair at Stockport NHS Foundation Trust. Marisa is a passionate champion of equality and inclusion. Non-Executive Director at The Christie NHS Foundation Trust, since September 2025. Trustee at Greater Manchester Moving, since June 2025. Director at Kingsbridge Health Ltd, since 2019 (shareholder). Last updated: 17 February 2026.

Mary Cunneen

Non-Executive Director

Mary was a Commissioner at the Independent Police Complaints Commission (IPCC), leading the organisation through a period of substantial change. She is former Chair of Home Office National Referral Mechanism multi-agency panels, and Non-Executive Director of the Disclosure and Barring Service. Non-Executive Director at the Disclosure and Barring Service, since April 2019. Associate member of the FDA. Member of the Law Society. Last updated: 18 February 2026.

Mike Durkin

Non-Executive Director

Throughout his career Mike has supported leaders in patient safety across England and globally. He was awarded an OBE by the Queen in 2017 in recognition of his services to patient safety. He is Senior Advisor on Patient Safety Policy and Leadership at the Institute of Global Health Innovation, and Director of the Academic Partnership for the Global Patient Safety Collaborative, launched in 2019 by the World Health Organization (WHO) and the UK Government. Prior to this he held the position of National Director of Patient Safety at NHS Improvement, from 2012 to 2017. Mike is a visiting professor at the Institute of Global Health Innovation, Imperial College London, and the University of the West of England. He sits on national and international research, policy and patient safety advisory boards, including the WHO Task Force on the Global Action Plan for Patient Safety. Chair of the Oversight Group at the National Institute for Health and Care Research (NIHR) Patient Safety Research Collaborative Network, since 2023. Trustee of Patient Safety Watch, since 2023. Director and shareholder at Zero Harm Consulting Ltd, since 2022. Chair of the Governing Board of Trustees at the Patient Safety Movement Foundation, since 2018. Fellow of the Royal College of Medicine of London, since 2017. Associate Non-Executive Director at NHS Resolution, since 2016. Fellow of the Royal Society of Medicine, since 2010. Fellow of the Royal College of Anaesthetists, since 1981. Last updated: 18 February 2026.

Peter Schild

Non-Executive Director

Peter comes to HSSIB having most recently been the Chief Financial Officer at the Institute for Apprenticeships and Technical Education, an arm’s length body of the Department for Education, for four years. In this role he created an award-winning corporate services team, and in 2022 was nominated by the National Audit Office for the PwC Annual Report and Accounts award. He has had a long financial and audit career that began at J Sainsbury plc where he qualified as a Chartered Management Accountant. He moved onto BT plc where he held various senior financial management roles, before joining the Department for Work and Pensions as Deputy Finance Director responsible for finance, audit and security. Peter was then promoted to Finance Director in HM Revenue and Customs (HMRC), where he held numerous financial directorships including audit, assurance and security in his last role there. Peter is a Fellow Chartered Management Accountant (FCMA), Global Certified Management Accountant (GCMA) and Fellow of the Chartered Institute of Management Accountants (CIMA). Non-Executive Director and Chair of the Audit and Risk Assurance Committee at South East Coast Ambulance Service NHS Foundation Trust. Non-Executive Director and Chair of the Finance and Performance Committee at South Central Ambulance Service NHS Foundation Trust. Property Trustee at 1st Molesey Scouts. Last updated: 4 September 2026.