Our Team

Darryl Christie

Specialises in self harm, suicidal ideation and Personality Disorders. 

Darryl is an accredited dialectical behaviour therapist (one of the first in the UK) and a subject matter expert in DBT. He trained both with the Linehan Institute in the USA and British Isles DBT in the UK. Darryl also received expert supervision in DBT and DBT-Prolonged Exposure (PE) from both Dr Heidi Heard and Dr Melanie Harned who are both leading and world-renowned clinicians in the field of borderline personality disorder (BPD), DBT and trauma.

His special interests include suicidal and self-harming behaviours in adults and children, treating anxiety and depression, eating problems, addictions and complex PTSD as well as negative self-talk and relationship difficulties that often ensue as a result of the above.

Memberships: Health and Care Professions Council (HCPC) Society for Dialectical Behaviour Therapy in the UK and Ireland

Dr Tanya Rajmangal

Specialises in Trauma/EMDR

Tanya is an experienced Psychologist with a Doctorate in Counselling
Psychology (Dpsyc). She is registered with Health and Care
professionals (HCPC) and is a chartered member of the British
Psychological Society (BPS). Tanya completed DBT training with the
Association of Psychological Therapies (APT) and the British Isles.
Throughout her career, Tanya has worked in a range of settings
including the NHS, schools, outpatient and inpatient treatment for
adults and young people. She previously worked at the Priory
Hospital where she delivered DBT groups and was responsible for the
management and growth of the service.
Tanya currently delivers both group and individual DBT sessions. She
has a private practise offering other therapy modalities such as
Cognitive Behavioural Therapy (CBT), Psychotherapy, Eye Movement
and Desensitization and Reprocessing (EMDR) and is a qualified
clinical supervisor with the BPS. Tanya works with a variety of
presentations including anxiety, depression, self-harm, emotional
dysregulation, relationship difficulties and complex Post-Traumatic
Stress Disorder (PTSD). Tanya has a specialist interest in trauma.
Tanya believes in putting the client at the centre of her clinical work
and building a therapeutic relationship where clients feel safe to
develop effective coping strategies.

Dr Jackie Edwards

Specialises in Trauma, DID and CPTSD

Jackie is a Chartered Clinical Psychologist registered with the Health & Care Professions Council (HCPC) and is an Associate Fellow of the British Psychological Society (BPS). Jackie gained her Doctorate of Clinical Psychology (ClinPsyD) in 1999 and has more than 25 years of experience working in the NHS with adults, couples and families with complex relational, psychological and mental health issues. She has post graduate training in Eye Movement Desensitisation and Reprocessing (EMDR), Cognitive Analytic Therapy (CAT) and is accredited as a supervisor with the Association of Cognitive Analytic Therapies (ACAT). Jackie undertook training in Dialectical Behaviour Therapy with British Isles DBT. She was responsible for developing DBT services across NW Essex as part of her role within the NHS. Jackie currently works in private practice with clients with a wide range of presentations including anxiety, depression, OCD, personality disorders and psychosis. She and has a special interest in complex trauma (cPTSD) and dissociation – working with adult survivors of childhood trauma and abuse. She also works as a Consultant Psychotherapist with the Clinic for Dissociative Studies UK (CDS UK) a charitable organization funded by the NHS to provide specialist services for people diagnosed with Dissociative Identity Disorder (DID).

Dr Pascal Diab

Specialises in ADHD,  ASD and Autism.

Dr Pascal Diab is a Clinical Psychologist that is registered with the HCPC UK. Pascal studied at the University of Lancaster and obtained her Doctoral qualification in 2011, following completion of BSc in Psychology and MSc in Developmental Psychology and Research Methods.

Pascal has experience of working in the areas of neuropsychology and mental health with adults and children, in the NHS and private sector. Pascal has worked in inpatient, outpatient and community settings as a Clinical Psychologist. Prior to her Doctoral training she worked with looked after children, mainstream and specialist educational provisions.

Dr Diab has additional training to administer ‘gold standard’ diagnostic tools for the evaluation of children and adults with suspected Autism Spectrum Disorders; the Autism Diagnostic Interview-Revised (ADI-R) and the Autism Diagnostic Observation Schedule (ADOS-2). She also has additional training and experience in working therapeutically with children/ adults that have a diagnosis of ASD and ADHD.

Pascal is an Outpatient DBT lead at a Private Hospital, she has specialist
knowledge and training in attachment and trauma related difficulties. Pascal is trained to level 4 in Dialectical Behavioural Therapy (DBT) and is trained in the Dialectical Behaviour Therapy Prolonged Exposure Protocol (DBT-PE).

Pascal is a skilled and committed practitioner. She has extensive training and clinical experience. At the forefront of her practice remains person-centred care.

Pascal has a particular strength in the development of comprehensive
formulations and supporting clients to make sense of what can, at times seem too much, or overwhelming. The formulaic aspect of her approach gives clients a clear understanding of what to expect from therapy and enables them to develop clearly defined goals which motivates and enables clients to get the most from their therapy journey and to build upon a life worth living.

Dr Emma Dunne

Emma is a Chartered Clinical Psychologist registered with the Health & Care Professions Council (HCPC), British Psychological Society (BPS) and EMDR Association; working across NHS and private practice settings.  

Emma gained her Doctorate in Clinical Psychology (DClinPsy) in 2015 and has more than 15 years of experience working in the NHS, particularly within the clinical areas of complex mental health, personality disorder(s) and trauma. Emma’s first NHS post, back in 2008, involved assisting with the development of a new county-wide, specialist DBT and personality disorder treatment service. She went onto complete her Dialectical Behaviour Therapy training with British Isles DBT in 2016, during which time she was working in another NHS specialist DBT treatment service in London.  

Emma has published several articles focusing on the experiences of people with Borderline Personality Disorder (BPD) and completed her doctoral thesis in factors that effect treating people with BPD. She has also completed post-graduate training in other evidence-based models for treating people with BPD; including Metalization Based Therapy (MBT) and Structured Clinical Management (SCM) with the Anna Freud Centre.  

In addition to her special interest in BPD, she also has an interest in trauma and Post Traumatic Stress Disorder (PTSD), working within the DBT-Prolongued Exposure (PE) Melanie Harned treatment model and gaining her post-graduate training to level IV in Eye Movement Desensitisation and Reprocessing (EMDR).  

Emma is extensively trained in CBT and third-wave CBT models, including Compassion Focused Therapy (CFT) and Acceptance and Commitment Therapy (ACT), often utilising these models with clients facing a range of anxiety and mood difficulties.  

Emma believes that at the heart of productive therapy, lies a strong therapeutic relationship, a keen awareness of the client’s goals, and a robust formulation (psychological understanding) of the client, enabling both client and therapist to choose and benefit from the most effective evidence-based approaches to date. 

Claire Butler

Specialises in self harm, suicidal ideation and emotional dyregulation. 

Claire is a BACP registered therapist (MBACP) and a member of the Society for DBT. Claire has trained with British Isles DBT Training as well as Marsha Linehan’s online Behavioural Tech programme and is currently completeing her PG Dip in DBT at The University of Bangor. 

Claire has been running DBT groups for individuals and families both in the private and charitable sectors for over 4 years as well as running emotion regulation workshops. Claire specialises in personality disorders as well as individuals suffering with extreme emotional dysregulation and has worked with teens and adults in this client group extensively. Claire also has vast experience of working with individuals who repeatedly self harm or engage in parasuicidal behaviours. Claire also has additional training in CBT, stress based mindfulness as well as emotion regulation.

Tom Coles

Specialises in Addiction, self harm and couples. 

Tom is an integrative counsellor and qualified DBT Therapist. He trained with the British Isles DBT training team and currently practices at the Priory Hospital in North London, where he also received training with accredited DBT therapists. He has a special interest in working with patients with emotional dysregulation and currently provides treatment in group and 1:1 settings.

Tom’s background is working with addiction where he spent several years working in a residential rehabilitation service for drugs and alcohol in Hertfordshire. He has previous experience working with young persons mental health services and Schools. Tom received training in mindfulness at the Oxford Mindfulness centre and has further development attending silent retreats with the London Buddhist centre. Tom also has a keen interest in relationship and psychosexual therapy is currently training towards a 2 year diploma.

His overall style is relaxed and down to earth, often with humour and creative approaches to skills training.

Melissa Bizier

Specialises in self compassion, validation and emotion dysregulation. 

Melissa is a member of the Society for Dialectical Behaviour Therapy (SDBT) and a registered member of the British Association of counselling and psychotherapy (MBACP)

Melissa currently practices at the Priory hospital in Chelmsford. She facilitates both skills groups and individual sessions.

Her personal field of interest is in working with people to reduce emotional stress and in finding effective ways of improving quality of life.

Melissa also has an interest in eating disorders, relationship issues, critical self-talk, suicidal ideation and self- harming tendencies.

Daniel Mansaray

Specialises in eating disorders and self harm. 

Daniel is a HCPC registered physiotherapist and qualified DBT therapist. Daniel completed his training for intensive DBT as well as DBT-PE with DBT British Isles.

Daniel has a personal interest treating clients with personality disorders, eating disorders as well as persons with an unhealthy or addictive relationship with exercise.

Daniel also has experience in the Child and Adolescent Mental Health Service (CAMHS). He takes a holistic approach to treating his clients in his chosen specialties in an un-biased manner.

Marie Wassberg

Marie has a Private Practice, and is also working with Stepping Stones Clinic, The Priory Group, Body and Soul Charity, Greenwood Mentors, SDS among others. She is working with ages from 2-20 years old in individual sessions; running DBT-skills groups for adolescents and young adults; running workshops for parents; training and supervising other professionals.

Marie has been involved with developing many DBT- informed programmes in different settings, mainly for children, adolescents and young adults aged (from 18-30 years), both in Sweden and in England. She is also running groups/workshops/presentations for parents, staff working with children and adolescents, as well as teachers.

Marie has been a very welcomed guest lecturer at universities in Sweden, a facilitator at workshops, Conferences and training events throughout the UK (NOTA, BABCP, Bank of England and Schools), in Sweden (Schools, Social Services and Care homes) and the USA (ATSA). She has also offered training and supervision to other professionals who work with children and adolescents on how to improve relationships and regulate emotions in a DBT-informed approach and using DBT skills.

As a therapist, Marie has worked for over 25 years with children and adolescents who have been sexually abused, suffered from complex PTSD/trauma or experienced other kinds of trauma and/or who have displayed harmful sexual behaviours. Her client group also includes: deliberate self-harm; suicidal thoughts; depression; and anxiety among other difficulties. As a qualified Social Worker, her work has involved child protection, child-in-need, unaccompanied minors and asylum seekers. Marie also has experience of working with children and adolescents presenting challenging behaviours, autism spectrum disorder (especially high functioning) and ADHD.

Qualification: Qualified Social Worker; Bachelor in Social Science (1999), and registered with Social Work England. Furthermore, Marie is a qualified Cognitive Behaviour Therapist (CBT) and Accredited Cognitive Behaviour Therapist with BABCP (British Association for Behavioural & Cognitive Psychotherapies). Marie has Diplomas in: Dialectic Behaviour Therapy (DBT); DBT for Adolescents (DBT-A); DBT for Schools (STEPS-A); Trauma Focused-CBT (TF-CBT); Prolonged Exposure (PE); and EMDR.

Glenda Jean Taylor

Specialises in CPTSD, Trauma and Personality Disorders. 

Glenda is a fully accredited BABCP CBT therapist, with experience delivering CBT on a 1 on 1 basis to adults over the age of 18.

Glenda is a level 4 qualified EMDR practitioner working towards accreditation with EMDR Association UK and EMDR Europe.

She is also a DBT therapist with experience in delivering DBT skills groups as well as 1 on 1 DBT sessions to adults.

Glenda’s special interest is complex PTSD, with many of her clients being under the care of a consultant psychiatrist.

Lalagay Steelman

Lalagay is a registered member of the British Association for Counselling and Psychotherapy (MBACP) and has trained in DBT in the UK through DBT British Isles. Following a Bachelor degree in Clinical Psychology in France, she completed a Masters in Clinical Mental Health Counseling in the United States.

She first started practicing DBT in 2015 in the United States within a comprehensive day treatment programme for mothers struggling with substance misuse issues. In 2018 she moved to the UK and became a DBT therapist at the Priory Hospital in Roehampton. She was responsible for reshaping the 12-week DBT programme in place at the time into a 20-week adherent skills training group programme, and has been instrumental in the continued work of shaping the Roehampton Priory’s DBT programme towards increased adherence and treatment efficacy.

She currently works in private practice and is passionate about bringing effective DBT therapy to clients whose struggle with emotional dysregulation has become a barrier to a life worth living and who have not benefited from other mainstream therapeutic approaches.

She enjoys empowering her clients and working herself out of the job. She has particular interest in working with individuals who experience emotional dysregulation and also struggle with binge eating and body image concerns.

Janette Rodriguez

Janette is a BABCP CBT therapist with multiple therapeutic approaches, which include Psychodynamic Therapy, Dialectical Behaviour Therapy, Person-Centred and an Integrative approach. She is bilingual and offers therapy both in English and Spanish.
Trained with British Isles DBT training as well as The Association for Psychological Therapies (APT) in DBT. 
She has experience working in a variety of setting which include the NHS, education, non-profit organisations, treatment centres and the private sector.  She also has experience running CBT, DBT and emotion regulation groups.  
Janette believes the therapeutic relationship is a fundamental aspect in therapy.  She has interest in helping others learn skills to cope more effectively, regulate their emotions and validate themselves. 

Katie Murphy

Katie is a registered member of the BPS, BABCP and Associate Member of the Society for DBT. With over 5 years’ experience working with inpatient, outpatient and community populations in the private, NHS and charitable sectors, she has a range of experience in managing complex presentations in both adults and adolescents. Katie is trained in DBT through British Isles DBT Training, and has been running DBT groups at The Priory Hospital Roehampton and Body & Soul Charity for a number of years as part of a team of highly experienced practitioners and supervisors.

At present, Katie is completing a PGDip in CBT for Trauma and Personality Development at the University of Oxford. She practices Trauma-Focused CBT in addition to DBT and has a special interest in working with personality disorders, emotional dysregulation, complex trauma, suicidality and self-harming behaviours in adolescents and young adults.

 Katie currently practices on an Tier 4 inpatient CAMHS ward where she is passionate about implementing a behavioural approach to challenging behaviours with a therapeutic style rooted in validation, irreverence and humour to bring about changes and instil hope in young people and their families.

Hannah Woodward

Hannah is a Registered Mental Health Nurse with the Nursing and Midwifery Council, a Member of the Society for DBT, and is currently completing the two year Post-Graduate Diploma to gain accreditation with the Society for DBT. She currently practises in the NHS offering individual and group DBT therapy within a specialist personality disorder service.

Hannah has experience in developing and expanding a new fully-adherent DBT programme in the NHS, as well as providing Structured Clinical Management, group therapies based on the Compassion Focused Therapy framework and Distress Tolerance Skills clinics on an individual basis.

Hannah’s speciality and main passion is working with those who attract a diagnosis of personality disorder, with a keen interest in supporting those who experience high levels of suicidal and self-harming behaviours to find their way out of suffering and towards a life worth living.

Ryan Askey - Jones

Ryan is a BABCP accredited Cognitive Behavioural Therapist, SFDBT accredited DBT therapist, EMDR Europe accredited EMDR therapist, BAMBA registered mindfulness teacher and registered Mental Health Nurse with extensive experience of working with people with depression, anxiety and severe mental illness within the NHS and in private practice over the past 22 years.  Throughout his career, he has had opportunities for extensive teaching across a range of subjects’ up to master’s level and have been actively involved in research and audit. This has also allowed him to carry out scholarly activity of writing academic papers that have been published.

He currently delivers CBT for clients with depression and anxiety disorders, MBCT for clients with recurrent depression, EMDR for clients with PTSD and complex PTSD and comprehensive DBT for clients with borderline personality disorder within the NHS and private practice. He is also a a clinical supervisor for CBT therapists, DBT therapists and mindfulness teachers within the NHS.

He is an external examiner for various IAPT courses and has written peer reviews for the The Cognitive Behavioural Therapist, The Behavioural and Cognitive Psychotherapy Journal and Mindfulness Journal.

He is currently working in partnership with British Isles DBT to co-deliver MBCT for life to DBT therapists who want to deepen their own mindfulness practices.