Executive directors

Ian became Chief Executive in August 2019. He was appointed Medical Director in January 2011 and Chief Medical Officer in January 2017.

He joined the Trust as a consultant renal physician and honorary senior lecturer at King's College London in 1994. His clinical and academic career has included a broad range of senior management positions.

In addition to his clinical work, Ian has played a key role in the development of the Trust's life science partnerships, and has been responsible for many aspects of the Trust's digital transformation and innovation agenda.

Avey returned to the Trust as Chief Nurse in November 2020, having trained as a critical care nurse at St Thomas' at the beginning of her career.

Avey qualified in 1991 and her clinical experience includes theatre, general intensive care, coronary care and cardiothoracic nursing.

She became Chief Nurse and Director of Infection Prevention and Control at St George's University Hospitals NHS Foundation Trust in February 2017.

Avey has a postgraduate diploma in health services management and a masters in public administration. She is also Vice President of the Florence Nightingale Foundation and honorary Vice President of The Nightingale Fellowship.

She is our:

• Director of Patient Experience
• executive lead for adults' and children's safeguarding
• executive lead for infection, prevention and control

Steven was appointed as Chief Financial Officer in January 2022.

He joined Guy's and St Thomas' in 2018 as the Director of Finance. He has extensive experience of NHS revenue and capital, major projects, change management, contracts, partnerships and commercial activities

He has worked in the NHS for over 20 years, initially joining the service on the national finance graduate scheme. Steven has worked for a number of NHS organisations in and around London, including Moorfields Eye Hospital NHS Foundation Trust where he was Chief Financial Officer and Deputy Chief Executive.

Jon was appointed Chief Operating Officer in January 2017.

Jon became the Chief Operating Officer and Deputy Chief Executive at Southend University Hospital NHS Foundation Trust in January 2014.

Before working at Southend, Jon was Director of Operations at Guy's and St Thomas'. He has many years' experience in director-level roles that span clinical operations, service modernisation, performance improvement, human resources and workforce planning.

Crystal was appointed as Chief People Officer in August 2024. She was previously Chief People Officer at Royal Free London NHS Foundation Trust, from 2021.

Before joining the NHS, Crystal spent 18 years in the UK Civil Service, joining the Home Office from university and progressing through HR and organisational development roles both there and in the Ministry of Justice.

She went on to hold senior roles at the Cabinet Office as HR Director, and Director of People at the Department for Work and Pensions – one of the Government's largest departments, employing 80,000 colleagues nationally.

Simon has been our Medical Director since 2016 and became Executive Medical Director in 2019. He originally joined the Trust as a consultant renal physician in 2005.

He became a clinical director in 2008 and was Chief Operating Officer from 2014 to 2016.

He has a PhD from Queen Mary University of London and an MBA from Westminster Business School.

Lawrence was appointed Deputy Chief Executive in March 2020.

Before joining Guy's and St Thomas' he was Director of Strategy, Planning and Performance at University Hospitals Birmingham NHS Foundation Trust.

Lawrence has held a wide range of healthcare leadership roles, both in the UK and abroad. He also worked at the Department of Health in the offices of both the Secretary of State and the NHS Chief Executive and was managing director of the Shelford Group.