Meet the Team

Psychologists at Maple have undergone a minimum of seven years full-time training in Psychology and have additional post-qualification training in a range of innovative specialist therapeutic approaches. Most hold Consultant or ‘Highly-Specialist’ grades within the NHS together with academic positions.

All psychologists at Maple are trained to use a variety of therapeutic approaches. We believe that this helps us match the most effective approach to particular people and particular problems.

They have many years of experience at managing, training and supervising counsellors, psychotherapists and psychiatrists.




Dr. Mat King is an Associate Fellow of the British Psychological Society.  He has been practising for over 15 years and has extensive experience in working with people with anxiety, depression and long term difficulties.  He is the clinic director at Maple, Consultant Psychologist for a Mental Health NHS Trust in South London and Associate Lecturer at the University of Surrey.  (Read more.)




Dr Robert Hill is a Consultant Clinical Psychologist working in both the NHS and in private practice. He specialises in the treatment of addiction and adult mental health issues and has written extensively in both areas. He holds both a PhD and Doctorate in Clinical Psychology and his therapeutic orientation is informed by both cognitive behavioural and existential approaches to mental health and well-being. (Read more.)



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Dr Dominic Addison has a wealth of experience in adult mental health.  Having returned to London from his established practice in New York in 2014, he brings his knowledge of chronic and long term psychological problems. (Read more.)




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Dr Alexandra Chrysagi is a Principal Counselling Psychologist at Hertfordshire NHS Community Mental Health service. She has worked in the NHS since 2009 and currently works within a Community Mental Health for clients with Complex Trauma and Personality Disorders. (Read more.)