Fiona is a Consultant Clinical Psychologist and Director of GreenWood Mentors Ltd. She specialises in the many consequences of childhood trauma including complex PTSD, dissociation and effects on the development on the self. Fiona also enjoys consulting to groups and individuals on performance maximisation and change management. She was an NHS Consultant Clinical Psychologist and Director of Service; now she conducts research with Southampton University as a Visiting Academic; she develops and delivers training, integrating CBT, DBT ACT and CFT; she supervises clinicians individually and in groups and consults on developing expertise and care pathways, especially for people with complex presentations such as cPTSD and DID. She is an accredited CBT Practitioner, Trainer and Supervisor, Fellow and Trustee Director of BABCP. She has edited and authored several books (see our publications page). She volunteers each year, consulting to an Indian NGO on their programs for young people from disadvantage, their organisational structures, developing outcome evaluation tools and publishing research.

Gill is Consultant Clinical Psychologist and leader of our Dialectical Behaviour Therapy (DBT) Training Team along with Catherine and Marie; she was previously co-leader of our DBT service. She also joins with Fiona in our Dissociative Disorders Training suite. She is also an expert organisational psychologist. Gill trained in Oxford and was supervised by Aaron T. Beck. She integrates DBT and acceptance and commitment therapy (ACT) in her work. As well as delivering high quality supervision as a clinical psychologist, she works with organisations worldwide, coaching and training business leaders and their teams to lead and perform better (thereby achieving their business objectives). She is passionate about health and wellbeing at work, researching how increased work pressure can lead to bullying, sickness and absence. She has developed training resources for airlines, to increase awareness as well as training pilots to offer peer support to their colleagues.

Catherine is qualified as a Social Worker, CBT and DBT Therapist and Trainer. She has delivered training in several countries and presented at many conferences. Along with Gill she has developed our suite of DBT training resources and is co-leader of GreenWood’s DBT Training Team. She has a special interest in women survivors of abusive relationships and formerly volunteered with Women’s Aid. Formerly a DBT Team Co-ordinator in the NHS she co-lead our GreenWood DBT Team until recently. She is currently working with Gill and Marie to deliver training in NHS, University and private settings, often focused on incorporating DBT theory and strategies into therapists’ usual practice (see our DBT training page).

Marie is a qualified Social Worker, CBT and DBT Therapist and Trainer. She integrates CBT and DBT and trauma-focused approaches into her supervision and training. She has special expertise with children and adolescents and is a valued member of our DBT Training Team. Marie worked at the Priory North London where she was the Lead Therapist on the Child and Adolescent Mental Health inpatient ward. She has expertise in child protection, child-in-need, looked-after children, young people with harmful sexual behaviours, unaccompanied minors and asylum seekers. Marie has extensive experience with children and adolescents presenting with challenging behaviours, as well as those with autism spectrum disorder (ASD), attention-deficit hyperactivity (ADHD) and other neurodivergent presentations. Marie has been welcomed as guest lecturer at universities in Sweden, delivered workshops, conferences and training events throughout the UK, the USA, Romania, Mexico. She delivered the first DBT training program in Poland for GreenWood. She is registered with Social Work England and is an Accredited Cognitive Behaviour Therapist with BABCP. Marie also has a Diploma in DBT.

Julien is a Clinical Psychologist with over 10 years’ Child & Adolescent Mental Health Service (‘CAMHS’) NHS experience; he now has his own private practice and is a Supervisor/Trainer with GreenWood. He has expertise in supervising work with children and young people and their families/carers, including those with Autism and other neurodevelopmental conditions such as ADHD. Julien is committed to helping therapists in their assessments of families and formulating the presenting problems and enabling therapists to work jointly with families to achieve their goals. He has special expertise in child-to-parent aggression & abuse and/or significant sibling conflict. He has expertise in CBT, DBT, ACT, NVR Parenting Groups (for parents of children young people with neurodevelopment disorders or behavioural challenges, and/or who may be adopted or have experienced developmental trauma) and PE for Adolescents.