Meet the team

Professor Tim Doran

Tim Doran qualified in biochemistry and medicine at the University of Edinburgh and subsequently trained in psychiatry and public health in the North West of England. He moved into academia in 2000, holding posts at the Universities of Liverpool and Manchester, and Harvard School of Public Health. As Professor of Health Policy at the University of York, Tim undertakes research into the impacts of health and social policies on health inequalities, and the effects and unintended consequences of quality improvement initiatives in health care. 

Professor Simon Gilbody Theme Lead for MHC 

Professor Simon Gilbody directs the Mental Health and Addictions Research Group (MHARG) at the University of York’s Department of Health Sciences, and holds a joint appointment with the Hull York Medical School (HYMS)

Taking a population approach to mental health, Simon conducts large epidemiological studies and clinical trials (and reviews of trials) to promote effective, efficient and equitable NHS mental health services. His work focuses on common mental health problems (such as depression and anxiety) and the promotion of physical health amongst those with severe mental illnesses (such as schizophrenia and bipolar illness).

Professor Elizabeth Hughes

Elizabeth Hughes is a mental health nurse by clinical background, and is Professor of Applied Mental Health Research at the University of Huddersfield and South West Yorkshire Partnership NHS Foundation Trust. 

Her clinical experience spans acute psychiatric inpatient settings as well as in inpatient and community addictions treatment services in London and the south of England. Her main research (and teaching) interests include dual diagnosis of mental health and substance use; sexual health and relationships in people with serious mental health problems; and workforce development in mental health.


Moira Leahy |

Moira Leahy is a Consultant Clinical Psychologist at the Sheffield Health and Social Care NHS Foundation Trust.

Charlie Lloyd |

Charlie is a senior lecturer at the University of York and has a background in criminology, undertaking research at

the University of Cambridge and then the Home Office, where he managed a programme of work on drugs prevention. He then moved to the Joseph Rowntree Foundation, where he managed research programmes on young people, drugs and alcohol. In 2010 he moved to the Department of Health Sciences in the University of York, where he is undertaking research and teaching on addictions. 

Jo Orchard

Jo Orchard joined the Department of Health Sciences, University of York, in 1995 as a research secretary in the York Trials Unit supporting a range of research projects until 2007 when she became the administrator of the Addiction Research Group. With the recent merger of the Mental Health and Addiction Research Groups, Jo is now the Mental Health and Addiction Research Group and the CLAHRC YH Mental Health and Comorbidities theme administrator.  



Steve Parrott

Steve has worked as a health economist in the Department of Health Sciences, at the University of York and previously the Centre for Health Economics, since 1995. He currently heads the economics of mental health and addiction research and has undertaken many economic evaluations of smoking cessation and alcohol interventions and published extensively in the addiction field.


Thomas Ricketts

Tom is a Nurse Consultant in Psychotherapy & Research at Sheffield Health and Social Care NHS Foundation Trust and an honorary Research Fellow at the School of Health and Related Research, University of Sheffield.

He completed training as a mental health nurse in 1985 and as a cognitive behavioural psychotherapist in 1993. Tom then worked for the NHS in Sheffield as a Nurse Consultant in Psychotherapy and Research. He then completed his PhD in 2001, a study of the experience and cognitive behavioural treatment of problem gambling. Tom joined the Mental Health Section at ScHARR as an Honorary Research Fellow in 2000, and has been Acting Head of the Mental Health Group since December 2013. He has a wide interest in the study of NHS delivered psychological therapies, depression, comorbid physical and mental health problems, and clinical leadership.


Dr Ali Shehzad

Shehzad is a health economist by research training (PhD) with further background in Public Health (MPH) and Clinical Medicine (MBBS), at the University of York, Department of Health Sciences. Before starting his academic career in York in 2009, Shehzad worked as a health economist for an independent research organisation. Besides his research work in the UK, he also has experience of working in developing countries in the areas of economic evaluation, health insurance, public health interventions and programme management. 



Oliver Short

Oliver is responsible for the financial management of the Department of Health Science, University of York’s research projects and oversees the research proposal submission process. He provides administrative support to the Department’s Principal Investigators both pre and post award.

Oliver is the main contact for financial advice and coordinates financial administrative support to research groups including finances, budgeting, and the management of the financial aspects of personnel employed by the group, e.g. recruitment, staff contract extensions or renewals, fixed term contracts, and open contracts.

Dr Najma Siddiqi

Najma leads the mental health and comorbidity theme programme of work concerned with improving the care and health of people suffering from diabetes and serious mental illness (DIAMONDS). She is a Consultant Psychiatrist at Bradford District Care Trust (BDCT); and honorary Senior Lecturer at Leeds University Institute of Health Sciences (since 2008). Since 2010, she has also been the R&D Director at BDCT.

Najma’s research interests include delirium in care homes; evaluation of complex interventions; cultural adaptation of interventions & services for diverse communities.


Dr Ruth Wadman Theme Manager for MHC

Dr Ruth Wadman joined the University of York in 2017 as CLAHRC YH Mental Health and Comorbidity Theme Manager and Research Fellow. Prior to this, Ruth worked as a postdoctoral researcher at Durham University and the University of Nottingham. 

Ruth is a Chartered member and Associate Fellow of the British Psychological Society. Her research has focused on emotional and social functioning in young people with mental health conditions and/or neurodevelopmental disorders. Current research interests include psychosocial factors associated with self-harm, adolescent and student mental health, and the meaningful involvement of young people in research.