Our People

Dr George Ryan

Expert Clinical Advisor

Dr Ryan is a Clinical Specialist for Public Health England and works as our Expert Clinical Advisor. He has previously been the Clinical Lead for Shropshire Substance Misuse Services and is a GP with Special Interest in substance misuse since 2002. Dr Ryan also has been Clinical Lead for HMP Featherstone. Dr Ryan was also until recently Clinical Lead for the Royal College of General Practitioners (RCGP) Certificate in the Management of Drug Misuse in Primary Care and is also a trainer for the RCGP Certificate in the Management of Alcohol Problems in Primary Care. He has co-authored a recent publication on take-home naloxone published in Harm Reduction Journal.

Arun Sondhi

Research Manager

Arun is an experienced researcher with twenty years’ experience in the substance misuse sector. Arun leads on developing the training and the science behind node-link mapping.

He has been commissioned by over 15 DAATs and Primary Care Trusts to undertake needs analyses across criminal justice and community settings, in addition to bespoke evaluations and analyses. Arun has also worked closely with the National Treatment Agency for Substance Misuse (NTA) including project management support for node-link mapping; projects on equality and a study assessing operational links between criminal justice and public health agencies in 2008.

Arun’s previous experience includes working at Imperial College on substance misuse epidemiology and was the Manager for the equivalent of the National Drug Treatment Monitoring System (NDTMS) for London and the Eastern region between 1993-1999. At the Home Office, Arun worked on the British Crime Survey and Youth Lifestyle Surveys and led on the national evaluation of arrest referral schemes.

His experience at the Home Office also included helping to establish the Drug Intervention Programme (DIP). More recently, Arun has been working in consultancy including private practice and for blue-chip organisations such as Logica. Arun has an MSc from the University of London and an MBA from Henley Business School, University of Reading.

Marianne Withers

Business Development Manager

Marianne Withers is a leading health consultant with expertise in offender health. She has led numerous Clinical reviews for death in custody. She had conducted a large number of Health Needs Assessment and Alcohol Needs Assessment. Marianne has lead on the development of Clinical governance for service and is currently leading on the Training and development work for Alcohol in North West prisons as part of the Gateways Project. She has also contributed to Therapeutic Solutions’ recent programme of health needs assessments across Kent, Surrey and Sussex and has led on a service review of one custodial establishment.

Administration Assistant

Eddie O’Brien

Eddie is an ex-offender and has spent over eight years in prison in London and the South East. He proofs reads reports and is a currently on an advanced Excel course. He is also a keen writer.


Emma Williams

Emma currently also is a Senior Lecturer at Canterbury University teaching serving police officers and police staff. Emma has managed research teams at the Ministry of Justice and at the Metropolitan Police (in the Strategy, Research and Analysis Unit) leading on bespoke qualitative research projects to explore a wide range of police areas including sexual violence, public confidence, victim satisfaction and counter terrorism.

Dr Lisa Luger

Lisa is a researcher with significant experience of evaluation of sexual health and substance misuse services including undertaking recent evaluations of substance misuse services in HMP Wormwood Scrubs and evaluating brief alcohol interventions for homeless people. Lisa is also a visiting lecturer at Middlesex University and works as a consultant for the German government with a focus on women’s health, violence against women and sexual health.

Jennifer Norman

Jenny has over 13 years’ experience working for the Metropolitan Police working as a Strategic Researcher and in Performance Management. Jenny has also co-authored a number of papers on policing and is a Sessional Lecturer at Canterbury University.

Ian Knighton

Ian is a senior manager with extensive public health expertise as a project manager for a number of Trusts and with particular expertise on offender health (including in police custody). Ian will inform the study on the wider commissioning environment.

Jon Bull

Jon is a qualified therapist and member of the British Association of Counselling and Psychotherapy (MBACP). He has led on the development and creation of a range of resources that have earned national awards and Department of Health models of good practice. One of the largest pieces of work was a joint project with the University of Birmingham and Therapeutic Solutions to develop a bespoke young people's treatment model. This model has led to significant service improvements in the team he currently manages and has addressed needs that had long been an issue.

Recovery Services

We have offered a range of services to support the development of recovery services across the substance misuse sector including a number of reports and academic peer-reviewed papers. We have a paper written in partnership with Birmingham University on influences to 12-Step mutual self-help groups published in the European Addiction Research in September 2014.

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Our Services

We have developed a range of analytical and methodological approaches aimed at understanding the health and substance misuse needs of individuals including extensive interviews with a cross-section of service users in contact with healthcare and other related services. We have also worked to develop methods aimed at understanding the nuances of prisoner satisfaction of clinical services received. Our paper testing use of SERVQUAL as a mechanism for understanding ‘real’ satisfaction rates has been published here.

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Studies and Assessments

We have undertaken over 50 health and substance misuse specific needs assessments since 2006. These have included studies across community settings and across the criminal justice system (including detainee needs in police custody; service users in contact with Sexual Assault Referral Centres (SARCs) and prisoners in contact with health services in secure settings).

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