Josie Lester outdoors beside the water
Josie Lester
Meet Josie

Clinical experience grounded in compassion and collaboration

Clinical Associate Psychologist (MSc) | Accredited Dialectical Behaviour Therapist | Doctoral Trainee Clinical Psychologist

Josie is a Clinical Associate Psychologist and Accredited Dialectical Behaviour Therapist with over a decade of experience across NHS, local authority, third-sector and independent psychological services.

She is registered on the British Psychological Society Wider Psychological Workforce Register and is currently undertaking doctoral training in Clinical Psychology at Canterbury Christ Church University.

Her work is integrative, trauma-informed and neuroaffirmative, with assessment and treatment tailored to each person's needs, strengths, values and goals.

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Video introduction

Meet Josie

A personal introduction from Josie will be added after the clinic's planned filming.

Qualifications & Registration

Professional background

Qualifications

  • Doctorate in Clinical Psychology (DClinPsy), Canterbury Christ Church University – currently undertaking
  • MSc Clinical Associate in Psychology (Distinction), University of Essex
  • MSc Mental Health and Psychological Therapies (Merit), Queen Mary University of London
  • Postgraduate Diploma in Dialectical Behaviour Therapy, Bangor University
  • BSc (Hons) Psychology with Counselling, University of Greenwich
  • Access to Higher Education Diploma (Social Studies)

Registration and memberships

  • Accredited Dialectical Behaviour Therapist
  • Registered on the British Psychological Society Wider Psychological Workforce Register as an Associate Psychologist
  • Graduate Basis for Chartered Membership (GBC), British Psychological Society
  • Member of the British Psychological Society (MBPsS)
Specialist Areas

Areas of practice

Josie specialises in trauma, complex trauma, personality disorders and complex emotional needs, including emotional dysregulation, self-harm, suicidal crises, relationship difficulties and longstanding patterns of emotional distress.

Trauma and complex trauma

  • PTSD and complex PTSD
  • Childhood and relational trauma
  • Trauma recovery
  • Trauma-informed therapy

Complex emotional needs

  • Emotional dysregulation
  • Self-harm and suicidal behaviours
  • Interpersonal and identity difficulties
  • Shame and self-criticism

Neurodevelopmental needs

  • Adult ADHD
  • Adult autism
  • Neuroaffirmative practice
  • Adjustment following diagnosis

Mental health difficulties

  • Anxiety and depression
  • Stress and burnout
  • Relationship difficulties
  • Life transitions and low self-esteem
Therapy

Therapeutic approaches

Josie draws on evidence-based therapies and adapts treatment to the individual rather than applying one fixed approach.

  • Dialectical Behaviour Therapy (DBT)
  • Acceptance and Commitment Therapy (ACT)
  • Trauma-Focused ACT
  • Cognitive Behavioural Therapy (CBT)
  • Schema Therapy
  • Structured Clinical Management (SCM)
  • Compassion-Focused Approaches
  • Attachment-Informed Formulation
Experience

Clinical and professional experience

Josie's career spans Adult Social Care, Primary Care Mental Health Services, Community Mental Health Teams, Crisis Mental Health Services, Community Psychology Services, Personality Disorder Pathways, Learning Disability Services and specialist DBT services.

Before moving into psychological services, she supported people experiencing social disadvantage, housing difficulties, financial hardship and complex care needs. She later worked in employment and vocational rehabilitation, supporting people with severe and enduring mental health difficulties to access and sustain meaningful work.

Community mental health

  • Assessment and formulation
  • Individual and group therapy
  • Risk assessment and care planning
  • Consultation and report writing

Complex emotional needs

  • Specialist DBT
  • Trauma-informed interventions
  • Complex case consultation
  • Pathway development

Crisis services

  • Crisis assessment and triage
  • Risk assessment and safety planning
  • Brief psychological interventions
  • Emergency and community liaison
Beyond Clinical Practice

Leadership, teaching and research

Josie has managed psychology pathways, coordinated service delivery, supported service transformation and organisational change, supervised staff and volunteers, provided multidisciplinary consultation and contributed to quality-improvement work.

She previously taught on the Clinical Associate Psychology MSc programme and has delivered teaching and training across mental health services. Her current doctoral research examines DBT-informed workforce development within substance misuse services, including staff wellbeing, confidence and outcomes for the people they support.

  • Clinical supervision and line management
  • Reflective practice and structured debriefing
  • Workforce development and training
  • Service evaluation and quality improvement
  • Personality disorder pathway development
  • Neurodiversity-informed service improvement

“I believe that meaningful change happens when people feel understood, supported and empowered. My aim is to help individuals make sense of their experiences, build on their strengths and create lives that feel meaningful and worth living.”

Josie Lester
Confidential Enquiry

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