Ashley has trained in Cognitive Behavioural Therapy (CBT), systemic therapy, and psychodynamic approaches, and adopts an integrative, brief, and time-limited approach. He has experience in treating a range of complaints, including anxiety, depression, obsessive compulsive disorder (OCD), eating disorders, stress-related difficulties (including work stress), panic disorder, phobias, chronic pain, and addictions. He is trained in and qualified to practice Eye Movement Desensitisation and Reprocessing (EMDR) and Dialectical Behavioural Therapy (DBT).

Ashley has a number of years of clinical experience practising in schools, primary care settings, specialist treatment clinics, hospitals, and community mental health teams. He currently holds the full-time post of Principal Highly Specialist Psychologist within Berkshire Healthcare NHS Foundation Trust where he provides assessment and treatment for those with severe mental illness. 

He continues to be involved in teaching and training, holds a lecturer post at London University and provides training placements and supervision for clinical psychology trainees on the Oxford University Doctorate in Clinical Psychology. 

Ashley has specialised in post-traumatic stress disorder (PTSD) in his research and clinical work. He has worked in a specialist PTSD clinic for several years and as an expert witness writing medical reports for legal proceedings.

Goff A., Rose E., Rose S., Purves D. (2007).  Does PTSD occur in sentenced prison populations? A systematic literature review.  Criminal Behaviour and Mental Health, 17: 152-162.

Ashley has regularly published in peer-reviewed academic journals including Counselling Psychology Review and the British Association of Behavioural and Cognitive Psychotherapy journal as well as the media including the following:

Seasonal Affective Disorder – UK Gold 2005
Development / Adjustment – Metro 2006
Stalking – Metro 2007
Attachment – Metro 2000