About G-map: Leading the way in supporting young people
Providing specialised services for young people who exhibit inappropriate and harmful sexual behaviour, and supporting those who care for them.
About G-map
We are dedicated to helping young people navigate the challenges they face and build positive futures. Since 1988, we have been providing high quality assessment and therapeutic services, training, and consultancy to reduce sexual harm by addressing the needs of young people with inappropriate and harmful sexual behaviour.
Our approach is grounded in evidence-based practices and a deep understanding of the complexities these young people face. Whether through assessment, direct intervention, caregiver support, or working alongside professionals, we are committed to making a difference.
We are an independent organisation that has been at the forefront of developing services for young people who display inappropriate and harmful sexual behaviour for over 30 years. We are dedicated to promoting positive outcomes through compassionate, child-centred approaches. By working closely with families, carers, and professional networks, we strive to create safe and supportive environments where young people can heal, learn, and progress.
With a reputation for excellence in our assessment and therapeutic services, we remain committed to empowering young people to transform their lives, reduce the risk of harm, and build brighter futures.
Our history
G-map was formed in 1988 as a multi-agency initiative to develop services in the UK for young people who have displayed inappropriate and harmful sexual behaviours. We became an independent organisation in 1996 and are based in Greater Manchester.
Over the years, we’ve earned a national reputation for the quality of our work, and our ongoing commitment to training, research, and innovation. Through a combination of therapeutic assessment, intervention services, and a collaborative approach with local authorities and agencies, G-map has continually expanded and evolved to meet the ever-changing needs of the young people we serve.
We are committed to the welfare of the young person and provide an optimistic, child-centred environment where the young person can develop the self-belief and self-knowledge they need to progress to a safe and fulfilling future.
Our team
Our team consists of dedicated professionals from a range of disciplines, including psychology, social work, criminal justice, counselling and specialist nursing.
Each member brings their unique expertise to our work with young people who display inappropriate and harmful sexual behaviours. We pride ourselves on our collaborative approach, with our practitioners working in co-therapy pairs to provide more effective support.
Our team is committed to ongoing professional development, ensuring we stay at the cutting edge of best practices in this highly specialised field. The combined knowledge, skills, and experience within our team allow us to deliver high-quality services tailored to each individual’s needs.
Our approach: evidence-based, holistic and compassionate
We adopt a holistic approach to intervention, focusing on understanding the full context of a young person’s life and focusing on their needs and strengths. We believe that effective support comes from building meaningful relationships, addressing the underlying needs that drive harmful behaviours, and empowering young people to build a safe and positive future.
Our work is informed by a strong research base, and we continuously evaluate and adapt our methods to ensure they meet the needs of those we support. By integrating therapeutic work with family and community networks, we create lasting change.
Co-working provides the obvious and important benefit of keeping practitioners and young people safe. Many of the children we work with have experienced trauma within a relational context and being alone with a single worker with whom they have not yet established a therapeutic relationship can often feel unsafe. Another practical advantage is that co-working provides greater consistency and stability for the young person allowing for emotional safety and trust within the therapeutic relationship to be preserved. As part of our service evaluation G-map gains feedback from service-users on their experiences of therapy; 85% of our service users view it as preferable to have two therapeutic workers rather than one.
G-map has developed ICOPE (Individual Community Opportunities Programme and Experience) to support young people’s safe social integration. ICOPE is an individually tailored incremental risk assessed programme of opportunities based on continuous assessment, analysis, review and evaluation. It involves a young person undertaking activities in community-based and other settings which directly reflect their assessed Good Lives needs and which assist them towards safe social integration and in their transition to increased independence.
The programme is graduated, moving through various risk assessed stages, from full supervision through shadowing, line-of-sight observations, spot checking and random spot-checking, as the young person develops and evidences their capacity to self-manage. ICOPE planning is undertaken at a multi-agency level, and is underpinned by the principles of defensible decision making.
Child and adolescent focused intervention
Ongoing research and partnerships
Research-driven therapeutic services
Collaborative, multi-disciplinary team
Good lives model for positive change
Co-working practioner approach
Meet our team
Bobbie Print
CQSW
Director
Bobbie has dedicated more than 40 years to supporting children and young people who display sexually harmful behaviour (HSB). She is widely recognised as one of the UK’s leading specialists in the assessment and therapeutic intervention of HSB and has played a significant role in shaping professional practice across the sector. In 1996, she co-founded G-map with Dave O’Callaghan, establishing an organisation that has become widely respected for its specialist assessment, therapeutic intervention and professional training.
A founding member of NOTA (the National Association for the Treatment of Abusers), Bobbie has played an influential role in the development of effective practice with children and young people whose behaviour has caused concern. Throughout her career, she has contributed to national policy and professional development through specialist publications, conference presentations and the delivery of training across the United Kingdom.
Bobbie continues to provide strategic leadership for G-map, ensuring that the organisation’s work remains grounded in evidence-based practice while supporting positive outcomes for children, young people, families and professionals.
Service Managers
Dr. Helen Griffin
BA (Hons) Social Science, PA Dip, NVQ4
Foren.Psy.D., AFBPsS
Helen is a Chartered Forensic Psychologist, registered with the Health and Care Professions Council (HCPC) and a member of the British Psychological Society’s Division of Forensic Psychology. Prior to joining G-map, Helen worked with socially excluded young people in youth work and contributed research for the Youth Justice Trust and the Youth Justice Board. Since joining G-map in 2006, she has become the organisation’s leading research specialist and is one of our two Service Managers.
She plays a key role in maintaining high standards of practice across the organisation and contributes to service development. Helen undertakes specialist assessments and therapeutic work with children and young people who display inappropriate and/or harmful sexual behaviour, while also providing consultation, clinical supervision and professional support.
Her clinical expertise is complemented by her leadership of G-map’s research programme and responsibility for psychometric testing. She is a co-author of the AIM2 assessment framework for children and young people who display harmful sexual behaviour and has helped to develop G-map’s adaptation of the Good Lives Model for use with children and young people.
Alongside her clinical practice, Helen has peer-reviewed and published journal articles and book chapters, to support the development of evidence-informed practice across the sector.
Laura Wylie
BA (Hons) Psychology
MSc Forensic Psychology
Laura joined G-map in 2009, bringing extensive experience from a range of forensic and secure care settings. Prior to joining the organisation, she spent ten years delivering psychological services and conducting research with adolescents experiencing emotional and behavioural difficulties, including those exhibiting inappropriate and harmful sexual behaviour. Laura also worked with adults convicted of sexual offences, within the Scottish Prison Service.
Laura is a Service Manager at G-map and alongside undertaking direct assessment and therapeutic work with children and young people, she provides consultation, clinical supervision and professional support to colleagues and partner agencies. She plays a key role in maintaining high standards of practice across the organisation and contributes to service development.
Laura has had a pivotal role in our adaptation of the Good Lives Model and has represented G-map at both national and international conferences, disseminating G-map’s model through seminars and keynote presentations.
Advanced Senior Practitioner
Verity Mukandu
BA (Hons) Criminal Justice
BA (Hons) Community Justice
NVQ Level 4 Diploma in Probation Studies
Level 2 Practice Educator for Student Social Work.
Verity qualified as a Probation Officer in 2006 before moving into youth justice, where she had extensive experience working with children subject to court orders, including those presenting with sexual behavioural concerns. She subsequently joined Wigan Youth Offending Team, progressing from Senior Practitioner to Operational Manager and led multidisciplinary work with vulnerable children and young people.
Verity joined G-map in 2016 as a Senior Practitioner and was promoted to Advanced Senior Practitioner in 2023. She undertakes specialist therapeutic work with children and young people, provides consultation to residential care providers and partner agencies, and supports professionals working with children in care.
An experienced trainer, Verity delivers specialist learning and development programmes for local authorities, residential providers and partner organisations, helping professionals strengthen their understanding of assessment, intervention and therapeutic practice.
Senior Practitioners
Sharon Leeson
Dip HE (Community Nursing)
Sharon joined G-map in 2002 and brought extensive experience in learning disability nursing, having worked across hospital, residential and community settings supporting adults, including individuals whose behaviour challenged services. Her clinical background has provided a strong foundation for her specialist therapeutic work with children and young people.
Sharon delivers assessment and therapeutic intervention for children and young people while providing consultation and liaison to residential care providers and statutory agencies. She works collaboratively with professionals to support effective, evidence-informed responses that promote positive outcomes.
Alongside her clinical practice, Sharon contributes to G-map’s national training programme, delivering specialist assessment and intervention training to professionals working across local authorities and health services. She has also presented at national and international conferences, sharing G-map’s approach and promoting best practice across the sector.
Rebecca McDonnell
MA Clinical Counselling
BSc (Hons) Psychology with Counselling
Rebecca joined G-map in 2025, bringing significant experience in counselling, clinical supervision and therapeutic practice with children, young people and adults affected by trauma and adversity.
Since 2017, Rebecca has provided specialist therapeutic interventions across a variety of settings, supporting individuals with complex trauma, emotional difficulties and Special Educational Needs. Prior to joining G-map, she worked as both a certified clinical supervisor and a counsellor and sexual health adviser for children and young people, combining therapeutic expertise with professional leadership and practitioner development.
At G-map, Rebecca undertakes specialist assessment and therapeutic work with children and young people, drawing on her extensive experience of trauma-informed practice to support meaningful and sustainable change.
Sarah Coleman-Bushby
MSc Social Work, BA (Hons) Psychology & Leisure
PGCert Education, PGDip Human Resource Management
Sarah joined G-map in 2025 following a varied career spanning policing, social work and fostering services. Her professional experience has centred on supporting vulnerable children, young people and families experiencing complex needs.
For eight years, Sarah worked as a Supervising Social Worker within an independent fostering agency, supporting foster carers to provide therapeutic parenting for looked-after children and young people. She worked extensively with children experiencing complex behavioural, learning and mental health needs, including unaccompanied asylum-seeking young people, children who had been trafficked, and those at risk of child sexual or criminal exploitation.
Prior to this, Sarah worked as a local authority social worker supporting vulnerable children and families. Before qualifying as a social worker in 2015, she spent 18 years with Greater Manchester Police, gaining extensive experience across a range of operational and specialist roles.
Sarah brings a broad understanding of safeguarding, trauma-informed practice and multi-agency working, enabling her to provide effective assessment, therapeutic intervention and professional consultation within G-map’s specialist service.
Jessica Eyre
BA (Hons) Social Work
Jessica joined G-map in May 2022, bringing extensive frontline experience in children’s social care and safeguarding. Prior to joining the organisation, she worked for six years as a children’s social worker in Child Protection, Safeguarding and Assessment Teams, and complex safeguarding, supporting children, young people and families facing complex safeguarding concerns.
After specialising in complex safeguarding, Jessica worked closely with the police and partner agencies to support children and young people at risk of child sexual exploitation, child criminal exploitation and modern slavery. Alongside her casework, she played an active role in developing the service and delivering multi-agency training to improve professional understanding of exploitation and effective safeguarding practice.
At G-map, Jessica undertakes specialist assessments and therapeutic work with children and young people, drawing on her extensive safeguarding experience to support positive change. She continues to contribute to professional development through consultation, partnership working and the delivery of specialist training.
Jocelin Addeley
MSc Psychology
Postgraduate Diploma in Cognitive Behavioural Psychotherapy
Postgraduate Certificate in Child, Adolescent and Family Mental Health
Jocelin is a qualified therapist with more than 15 years’ experience working with children, young people and families across a wide range of clinical and educational settings. Her practice is grounded in trauma-informed approaches and focuses on supporting children and young people with complex emotional and psychological needs.
Prior to joining G-map, Jocelin undertook specialist assessment and therapeutic intervention with young people experiencing complex trauma and dissociation. She also worked extensively within education, supporting children with additional needs while helping schools strengthen pastoral provision and develop best practice for SEND staff.
Jocelin has additional training in Dyadic Developmental Psychotherapy and Narrative Therapy and holds a British Psychological Society qualification in the use of psychometric testing. Alongside her clinical work, she has a longstanding interest in workforce development and has collaborated with public health organisations to increase access to Mindfulness-Based Stress Reduction (MBSR) programmes and to develop psychological skills training for frontline professionals.
At G-map, Jocelin combines specialist therapeutic practice with consultation and professional development, supporting children, young people and the professionals who work alongside them.
Siobhan Murphy
BA (Hons) Education, Psychology and Counselling
MSc Psychology
Siobhan joined G-map in 2026 following an extensive career in youth justice and intensive family intervention. Her work has focused on supporting children, young people and families experiencing complex behavioural, emotional and social difficulties.
For six years, Siobhan worked as a Multisystemic Therapist, providing intensive therapeutic support to families on the edge of care. She worked with children and parents experiencing behavioural difficulties, mental health needs and Special Educational Needs, delivering evidence-informed interventions including Cognitive Behavioural Therapy (CBT) and Dialectical Behaviour Therapy (DBT). She is also an experienced trainer and has supported the development of professional practice across a range of services.
Earlier in her career, Siobhan worked within Wiltshire Youth Offending Team, supervising children and young people subject to court orders and contributing to restorative justice services for victims. She has also worked with adults convicted of sexual offences, undertaking assessments and supporting rehabilitation and successful transition back into community settings.
At G-map, Siobhan brings extensive expertise in therapeutic intervention, systemic practice and multi-agency collaboration, supporting children and young people to achieve safer and more positive outcomes.
Clinical Consultant
Dr. Dawn Fisher
BSc (Hons), MClinPsych, PhD
Dr Fisher provides specialist forensic consultancy to G-map, bringing extensive expertise in the assessment, formulation and psychological intervention with people convicted of sexual offences. A Consultant Forensic Clinical Psychologist, she has held senior leadership and academic appointments throughout her distinguished career.
Previously, Dawn served as Lead Consultant Psychologist at St Andrew’s Healthcare, Birmingham, and Llanarth Court Hospital in South Wales. She was also an Honorary Senior Research Fellow at the University of Birmingham and continues to provide independent consultancy to specialist services, including Barnardo’s Better Futures Project in Bridgend.
Throughout her career, Dawn has made a significant contribution to research, programme development and professional practice. She has published extensively, presented at national and international conferences, and held influential advisory roles, including membership of the Home Office Accreditation Panel for Sex Offender Programmes and the STEP evaluation team, which examined the effectiveness of programmes for people convicted of sexual offences delivered in prison and community settings. She also co-authored an accredited treatment programme and served for several years on the Correctional Services Panel.
A founding member of NOTA, Dawn continues to provide G-map with specialist clinical consultation, supporting the organisation’s commitment to evidence-informed practice and high-quality therapeutic services.
Administration Team
Georgina Marlow
Senior Administrator
Georgina joined G-map in 2026 and is G-map’s Senior Administrator who plays a central role in ensuring the smooth and efficient operation of the organisation. She provides comprehensive administrative support to the management and clinical teams, helping to coordinate the wide range of activities that underpin G-map’s specialist services.
As one of the organisation’s principal points of contact, Georgina works closely with local authorities, partner agencies and professionals across the country. Her excellent organisational skills, attention to detail and commitment to high standards ensure that enquiries, referrals, training programmes and day-to-day operational processes are managed efficiently and professionally.
Georgina’s experience, reliability and commitment to delivering an excellent service make her an integral member of the G-map team.
Debbie Smith
Administrator
Debbie Smith joined G-map in 2017 and brings more than 30 years of administrative experience gained across a diverse range of business environments. Her extensive organisational expertise supports the effective delivery of G-map’s clinical services, consultancy and national training programme.
Debbie provides administrative support across the organisation, coordinating diaries, travel arrangements, meetings and training events while ensuring the efficient day-to-day running of administrative systems. She is recognised for her professionalism, adaptability and ability to manage multiple priorities while maintaining exceptional attention to detail.
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