FORMULATE PSYCHOLOGY
legal and clinical services for children and young people
WELCOME
Based in Bristol, Formulate Psychology offers clinical, legal and consultation services across the South of England and South Wales. Formulate was established by Dr Simon Bird in 2019, having previously worked with colleagues in a larger network of psychologists offering Expert Witness work. Dr Katherine Donnelly has worked with Formulate since 2023.​​​
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DR SIMON BIRD
Dr Bird began work as a Trainee Clinical Psychologist in 1996 and graduated from the Plymouth University clinical psychology doctoral training programme in 1999. He worked in Child and Adolescent Mental Health Service (CAMHS) in Bristol between 2000 and 2016. Between April 2016 and March 2018, he worked as the lead psychologist for children and young people with Autism Spectrum Conditions (ASC) in Bristol and South Gloucestershire, but now works exclusively in private practice. He is eligible for chartered status through the British Psychological Society. He is regulated by the Health Professions Council (HPC).
Simon is formally trained in the identification of Autism Spectrum Disorders (ASD) and offers independent assessments of these conditions alongside experienced colleagues. He also specialises in the clinical assessment of adolescents and young adults with mental health difficulties, particularly where these difficulties are co-existent with Autism Spectrum concerns. He has experience of the majority of common mental health difficulties and has also worked with young people with learning disabilities, drug and alcohol dependency and complex developmental difficulties.
Simon has undertaken medico-legal work on a private basis since 2001, and has to date prepared over 300 expert witness reports for criminal and civil proceedings, primarily in relation to children and young people. He is skilled in the use of formal assessment tools used to address questions of capacity and responsibility, including IQ assessments and mental health screening tools. He has extensive experience of interview-based assessments.
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Dr Bird also provides advice and consultation to services working with young people with complex mental health and developmental difficulties. He undertakes targeted pieces of assessment work in situations where the origin of a young person's difficulties might be unknown. These assessments include one-off meetings with parents; school consultations; and direct assessments of a child or young person's cognitive, social and emotional functioning.
Registration Number
PYL02614
DR KATHERINE DONNELLY
Registration Number
PYL33157
Dr Katherine Donnelly has been working in the field of mental health since 2011. She completed a PhD in developmental psychology before qualifying as a clinical psychologist, specialising in work with children, adolescents, and families. Dr Donnelly has particular expertise with attachment, looked after children, families on the edge of care, youth offending and safeguarding, having worked in an NHS attachment service between 2018 and 2023. Between 2021 and 2023 Dr Donnelly developed the clinical model and worked as the lead clinician at a children’s residential home in Gwent. This was a pioneering collaboration between the NHS and Social Care with a focus on caring for young people with some of the most complex needs in the region.
Dr Donnelly uses a range of specialist assessment methods and interventions to work individually with children, adolescents, and parents. She has provided consultation to professionals within the social care, health, education, and youth justice sectors and to members of the Senedd (Welsh Parliament). She has also completed and published research on parenting and attachment-based interventions. Dr Donnelly now works exclusively to provide expert witness assessments and reports in the family and criminal courts. She is eligible for chartered status through the British Psychological Society and is regulated by the Health and Care Professions Council (HCPC).