Executive team

Day to day decision-making is the responsibility of our executive team.

Our executive team is:

Professor Gillian Leng CBE, chief executive

Professor Gillian Leng CBE

Gill Leng is the chief executive of NICE. As a junior doctor she was struck by variations in clinical practice and this developed into a passion for using evidence to improve care. Her career has spanned research, evidence synthesis, management and healthcare.

Her aim is to transform the organisation with new methods and processes to put NICE at the forefront of evaluating new medicines, devices and diagnostics, and deliver dynamic, living guidelines.

Gill trained in medicine at Leeds, worked on clinical trials and epidemiological research in Edinburgh, and was a public health consultant in London. She was an editor of the Cochrane Collaboration, and is now chair of the Guidelines International Network.


Meindert Boysen, deputy chief executive and director of the Centre for Health Technology Evaluation

Meindert Boysen

After qualifying as a pharmacist, Meindert worked in a hospital in the Netherlands and held positions in health outcomes and sales in the pharmaceutical industry.

He completed an MSc in Health Policy Planning and Financing at the London School of Hygiene and Tropical Medicine and the London School of Economics and Political Sciences and briefly worked for the King’s Fund before starting at NICE in 2004.

Meindert was previously on the board of directors for the International Society for Pharmacoeconomics and Outcomes Research (ISPOR), from 2017 to 2020.


Dr Paul Chrisp, director of the Centre for Guidelines

Dr Paul Chrisp

Paul has been with us since March 2009, where he was responsible for setting up our accreditation programme for guideline developers. More recently, he was programme director of the Medicines and Technologies Programme.

Before joining us, Paul spent over 20 years in international medical publishing and communications, focusing on evidence to aid healthcare decision making and the adoption of new medicines. Paul trained as a pharmacist and is a member of the Royal Pharmaceutical Society.


Jane Gizbert, director of communications

Jane Gizbert

Jane joined us in 2008 and is responsible for the delivery of our strategic communications programme. Jane graduated from the University of New Brunswick in Canada with a BA Honours degree in political science. She subsequently obtained an MA in this field from Carleton University in Ottawa and went on to undertake a graduate journalism programme at the same university.

Jane was previously the head of corporate communications at the Medical Research Council, the UK's largest publicly funded medical research organisation. Her remit covered the full spectrum of corporate communications, including strategic development, public involvement and consultation, media relations and brand management.

Jane has worked extensively in the political field in Canada, including as press secretary for the official opposition and former prime minister of Canada and as director of communications for the Canadian Federation of Labour. Jane has also held senior positions in charitable organisations including the Scout Association and the International Planned Parenthood Federation.


Dr Felix Greaves, director of science, evidence and analytics

Dr Felix Greaves

Felix joined us in 2020 in the new role of director of science, evidence and analytics. He was previously the deputy director of science and strategic information and head of science and engineering profession at Public Health England. He has been closely involved in the development of our public health guidelines.

With 16 years’ experience in the health service, Felix has worked as a clinical advisor to the chief medical officer for England, a medical officer at the World Health Organization, and governor of an NHS foundation trust. Felix is a consultant in public health medicine and continues to work part time as a public health academic at Imperial College London.


Jennifer Howells, director of finance, strategy and transformation

Jennifer Howells

Jennifer joined us in 2020 and is our chief financial officer. She is responsible for our strategy, transformation programme, and corporate services including finance, human resources, corporate governance and estates and facilities.

Jennifer worked for over 16 years within health systems, including as a regional director for NHS England and Improvement and as a chief executive and finance director for several commissioning and provider trusts. Before joining the NHS, Jennifer worked for a number of years in business advisory roles. She specialised in mergers and acquisitions in the UK, Europe and USA, including advising life science companies.


Judith Richardson, acting director of health and social care

Judith Richardson

Judith is responsible for leading the implementation of guidance and quality standards across health, public health and social care. She joined us in 2007 and, as well as being our deputy medical director, has held roles with the clinical guidelines team, managed the development of NICE Pathways and led a portfolio of programmes including quality standards and indicators.

Judith originally trained in medicine in London, completing further training in public health and general practice. She then worked in public health for 15 years, holding a range of positions at local, regional, and national levels. She continues to have a training role in public health.


Alexia Tonnel, director of digital, information and technology

Alexia Tonnel

Alexia joined us in 2012 as director of evidence resources. She supervised a range of functions, including the information specialist and digital services teams. In 2020 she took responsibility for the IT function to lead the digital, information and technology Directorate. The directorate design, develop and maintain our externally facing digital operations, maintain our internal guidance production systems and manage IT operations.

Alexia studied business and management in France, after which she completed a Master of Science in international accounting and finance at the London School of Economics and Political Science. Before joining us, Alexia was a director with Deloitte and advised a range of clients in the healthcare and life science industries on policy and strategy development and programme implementation.