Dr Tim Fullen

Dr Tim Fullen is an expert witness and Consultant Clinical Neuropsychologist with Adult Community Neuro-Disability Services at Southwest Yorkshire Partnership NHS Foundation Trust, alongside independent clinical psychology and neuropsychology practice. His principal areas of expertise are adult neuropsychology, acquired and traumatic brain injury, autism, ADHD, learning disabilities and neurodevelopmental conditions, with specialist experience in the psychological and cognitive effects of neurological injury and disorder.

Dr Fullen is clinically responsible for a regional community neuro-disability service, where he assesses and treats adults with complex mental health, cognitive and behavioural difficulties arising in the context of brain injury and neurodevelopmental conditions. His practice includes specialist neuropsychological assessment, formulation and intervention, as well as adapted psychological therapies drawing on cognitive behavioural therapy, acceptance and commitment therapy, mindfulness and systemic approaches.

With more than a decade of post-qualification clinical experience, he has worked across both adult neuro-disability and child and adolescent mental health services, giving him experience across the lifespan. He holds the Qualification in Clinical Neuropsychology and is listed on the Specialist Register of Clinical Neuropsychologists, reflecting recognised specialist competence in clinical neuropsychology.

Dr Tim Fullen has been undertaking medico legal work since 2022 and accepts instructions in clinical negligence, personal injury and criminal matters. His medico legal practice is currently claimant focused, with instructions primarily involving adults over the age of 18 who require psychological or neuropsychological assessment.

He is instructed in cases involving acquired and traumatic brain injury, neurodevelopmental conditions, ADHD, autism and learning disabilities, particularly where opinion is required on neuropsychological functioning, psychological presentation, condition and prognosis. His work includes the assessment of cognitive, emotional and behavioural difficulties arising in the context of injury, disability or wider psychological vulnerability.

Dr Fullen is able to assess clients at his Leeds clinic and can undertake home visits where clinically appropriate, supporting solicitors with clear expert opinion in complex neuropsychological and psychological injury claims.

Dr Fullen’s clinical interests centre on the neuropsychological assessment and treatment of adults with cognitive, emotional and behavioural difficulties associated with acquired neurological conditions and neurodevelopmental presentations. His day-to-day work focuses particularly on adults affected by acquired and traumatic brain injury, where he assesses the impact of injury on memory, attention, executive functioning, mood, behaviour and everyday functioning.

He also has a strong clinical interest in autism, ADHD and learning disabilities, especially where these conditions interact with mental health difficulties, adjustment issues or complex functional needs. His practice involves detailed psychological and neuropsychological formulation, helping to distinguish between cognitive impairment, neurodevelopmental factors and psychological distress, and identifying appropriate intervention and support.

A significant part of his work involves adapting psychological therapies for people whose neurological or developmental profile affects how they process information, regulate emotion or engage with treatment. This includes tailoring interventions to improve coping, adjustment, confidence and participation in daily life.

Dr Fullen has contributed to peer-reviewed publications in clinical psychology and neurodevelopmental practice, with a particular focus on adult ADHD, autism, remote assessment, psychological treatment and the impact of COVID-19 on clinical care. His published work supports his specialist credibility in neuropsychology, neurodevelopmental conditions and adapted psychological intervention.