Expert Psychological Services for Individuals
and Organisations
ABOUT US
Sunstone Psychology provides expert Psychological Services for individuals and organisations. Our team consists of highly skilled HCPC registered psychologists and registered psychological therapists who provide specialist psychological assessment and therapy, clinical supervision, consultancy, bespoke training packages, high quality psychological risk assessments for court, and specialist assessments of ADHD.
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Our goal is to provide accessible and person-centred psychological services, using a trauma-informed approach. We offer in-person therapy based from clinic rooms in Tonbridge and Ashford (Kent) as well as running an online (virtual) clinics using MS Teams.
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We are experienced in delivering supervision and training to mental health professionals, in addition to delivering psychological consultancy to organisations to support clinical skill and service development. We provide high quality psychological risk assessments and expert witness services for court including adults and child protection, in addition to ADHD assessments for adults and children.
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To join our expanding practice team please make contact with us via our Contacts Form.
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Why "Sunstone"? Our name, Sunstone, aims to depict qualities relating to embracing new beginnings, expansion, action, and healing. Sunstones are said to have been historically used as navigational tools, aiding the user to locate the sun in a completely overcast sky. By working with us, we hope to provide you with opportunities for healing and growth by supporting you to use use your existing strengths as the foundation for personal growth. We hope to be the Sunstone that helps you to find the sun in an overcast sky.
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OUR TEAM
Dr Rebekah Dervley, Forensic Psychologist and Clinical Lead
I am a Forensic Psychologist registered with the Heath and Care Professions Council (HCPC) and a Chartered Member of the British Psychological Society (BPS), with over 10 years experience of clinical work in NHS and private settings. I can offer you a safe and confidential listening space, and work with you to understand your difficulties and help you find a way forward. I specialise in working with Trauma, PTSD, and Personality Difficulties. People who I work with may have experienced violence perpetrated by others, or have been violent towards others. I specialise in working with a range of coping behaviours, such as self-harm, addiction, and other behavioural issues, and have worked therapeutically with individuals diagnosed with ASD and ADHD. I have received specialist training to provide ADHD assessments in both children and adults, and provide high quality expert psychological risk assessments for court including adults and child protection.
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I previously held a Clinical Lead role within the NHS overseeing community-based forensic psychological therapeutic provision for individuals living across three London Boroughs. Prior to this, I held roles within NHS adult forensic mental health, low and medium secure hospitals, community and prison settings. I founded Sunstone Psychology in 2019 and have worked solely in independent practice since 2024.
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I have specialist training in Eye-Movement Desensitisation and Reprocessing (EMDR), Trauma-Focused Relational Cognitive Behaviour Therapy for Post-Traumatic Stress Disorder, Mentalization Based Therapy, Fire-Setting, Online Sexual Behaviours, and Forensic Risk Assessment. My treatment approach is integrative, drawing on Compassion-Focussed Therapy, Cognitive Behavioural Therapy, Dialectical Behaviour Therapy skills, Mentalisation-Based Therapy, and Systemic therapies.
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My therapeutic work is strongly influenced by Compassion Focussed and Trauma-Informed therapeutic values. I take pride in building warm, empathic, and non-judgemental client relationships. First and foremost, it is important that I help the clients I work with to feel physically and psychologically safe. I then use the therapeutic relationship to help people build an understanding of how their current-day difficulties emerged, what is perpetuating these difficulties, and to develop alternative coping strategies.
I am committed to engaging in regular supervision and attending training events to ensure I am continuing to develop professionally and work within ethical and evidence-based practice frameworks.
Qualifications:
- Doctorate in Forensic Psychology, DForenPsy, University of Nottingham, 2018
- Forensic Psychology (Distinction), MSc, University of Surrey, 2014
- Psychology (First Class), BSc Hons, University of Warwick, 2013
Associate Psychologists
Louisa McMullon
Forensic Psychologist
I am a Chartered Forensic Psychologist registered with the Heath and Care Professions Council (HCPC). I specialise in working with problematic behaviours and the development of alternative coping strategies. I have experience in helping people explore how past trauma, unhealthy relationship styles and personality difficulties may link to current problematic thinking styles and unhelpful coping behaviours, that are causing the individual difficulties in their everyday lives.
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I have completed specialist training in Eye Movement Desensitisation and Reprocessing (EMDR) Therapy and provide Adult ADHD assessments.
Over the past 15 years working in prison settings, I have gained experience of working with both male and female clients, both adolescents and adults. People who I work with may have experienced violence committed by others, or have been violent towards others. I specialise in working with a range of problematic behaviours, such as deliberate self injury, addiction, violence and other behavioural difficulties. I have worked therapeutically with people presenting with different areas of clinical need, such as bereavement, low mood, trauma, anxiety and coping strategies such as substance abuse and deliberate self injury. I have received training and have experiencing in completing risk assessments in extremism, fire setting, sexual, interpersonal and general violence and regularly complete psychological risk assessments and give evidence in parole hearings. ​​
Dr Amy Lawson
Forensic Psychologist
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I am a Chartered Forensic Psychologist registered with the Heath and Care Professions Council (HCPC). I have a passion for helping individuals who have experienced high levels of distress and trauma and subsequently developed mental health difficulties such as posttraumatic stress disorder (PTSD), depression, anxiety, personality difficulties and problematic anger. I have completed specialist training in Eye Movement Desensitisation and Reprocessing (EMDR) Therapy, Trauma-Focussed Cognitive Behavioural Therapy (TF-CBT), Compassion Focussed Therapy (CFT), Narrative Exposure Therapy (NET) and Forensic Risk Assessment. I am currently working within the NHS as part of a prison mental health team providing psychological therapies to individuals who have experienced complex trauma histories. I have also worked in secure settings; both medium and low secure hospitals as well as in the community within a specialist trauma service for ex-military and with parents who required both assessment and intervention as requested by the Family Courts and to prevent their children going into care or custody.
My main goal in treatment is to provide you with a sense of safety. I achieve this by offering an empathic, warm, and non-judgment space where you can feel at ease. Together, we can build a strong therapeutic relationship to help you understand what happened to you, what is maintaining your difficulties, how to alleviate distressing thoughts, feelings and memories as well as find healthier coping mechanisms. I always enable my clients to feel empowered, offering them a sense of choice and collaboration throughout their treatment. This means I will work with you to create a treatment plan which you understand and feel in control of.
I am registered with the Register of Applied Psychology Practice Supervisors (RAPPS) and can offer supervision to forensic psychologists in training as well as qualified psychologists. I have experience supervising clinicians working with complex cases and I always adopt a warm, conscientious and supportive approach to my supervisees, ensuring they feel safe and confident to bring difficult topic to me. I endeavour to provide a space to be reflective, learn from experiences and continue to develop both personally and professionally.
Dr Aggie Milner
Forensic Psychologist
I am a Chartered Forensic Psychologist registered with the Health and Care Professions Council (HCPC). I have experience working with adults and young people who are struggling with a range of emotional, psychological, and relational difficulties, and troubling or harmful behaviours. I can support with making sense of the impact of complex, and sometimes traumatic, life experiences, and other adversities.
It is important for me to offer a safe, containing space and build a therapeutic relationship with my clients. I prioritise transparency and empowerment, working collaboratively with my clients. We start by assessing and making sense of the challenges faced, to develop a formulation which informs their individualised treatment plan.
I am currently working in the NHS within Child and Adolescent Mental Health Services (CAMHS) supporting children, young people, families, and their surrounding systems. I also have experience working in secure psychiatric hospitals, prisons, and adult community mental health services. I have worked with both neurodiverse and neurotypical people.
In my clinical work, I use a range of therapeutic modalities including Cognitive Behavioural Therapy (CBT), Compassion Focused Therapy (CFT), Acceptance and Commitment Therapy (ACT), Schema Therapy, and systemic approaches. I have specialist training in Eye Movement Desensitisation and Reprocessing (EMDR) therapy and Mentalisation Based Treatment (MBT), which also underpin my practice.
Clyde Wright
Consultant Psychotherapist
I am a fully qualified psychotherapist registered with the United Kingdom Council for Psychotherapists. I am also an accredited member of the British Psychoanalytic Council. I have undertaken comprehensive training in several psychotherapeutic modalities including Systemic Psychotherapy (Couples and Families), Mentalization-Based Therapy (I am a supervisor in this modality) and Eye Movement Desensitisation and Reprocessing (EMDR).
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I have 25 years’ experience of working within mental health settings in the NHS. I started out my clinical career as a mental health nurse and went on to train as a psychotherapist. I have many years of experience working with clients individually, in group psychotherapy and with couples and families. During my career I have worked with people presenting with a wide range of relationship crises, personal dilemmas and distress.
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Professionally, have led several psychological/psychotherapy services within the NHS over the course of my career. This has involved training and supervising staff, organising and delivering evidence-based psychotherapy to a people with a wide range of mental health issues. I continue to work as a consultant psychotherapist in the NHS. I also offer supervision and guidance to clinicians and trainees.
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I have a special interest in assisting people who struggle with issues of self-worth, shame, anxiety, relationship/family difficulties, trauma and existential dilemmas. Sometimes, clients seek psychotherapy in order to explore areas of personal creativity and growth, rather than problems – I have experience in supporting clients with this.
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My psychotherapy approach is curious, conversational and gently challenging. I provide clients with a competent and ethical service in which I endeavour to engage clients in genuine, lasting change so they can lead happier and more fulfilling lives.
PUBLICATIONS
Dervley, R. (2023). Exploration of the Pilot use of Animal Assisted Therapy in a Community Forensic Psychological Therapies Service. Service Evaluation presented to Oxleas NHS Foundation Trust.
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Dervley, R., Perkins, D., Whitehead, H., Bailey, A., Gillespie, S., & Squire, T. (2017). Themes in participant feedback on a risk reduction programme for child sexual exploitation material offenders. Journal of Sexual Aggression, 23(1), 46-61. DOI: 10.1080/13552600.2016.1269958​
Dervley, R., Egan, V., & Tully, R. J. (2018). Impulsivity in adult male sexual offenders: A systematic review and meta analysis. Poster presented at the Annual Conference of the Association for the Treatment of Sexual Addiction and Compulsivity, January 2018.
Glorney, E., Raymont, S., Lawson, A. & Allen, J. (2019). Religion, spirituality and personal recovery among forensic patients. The Journal of Forensic Practice, 21(3), 190-200. DOI: 10.1108/JFP-05-2019-0021.
Jethwa, J., Glorney, E., Adhyaru, J., & Lawson, A. (2021). A grounded theory of multisystemic therapist roles in achieving positive outcomes for young people and families. Journal of Family Therapy, 43(1), 124-142. DOI: 10.1111/1467-6427.12287.
Turton, E., Myles, L., Lee, J., Saffin, V., & Lawson, A. (2022). Improving awareness of the HCR-20 and risk assessment process. International Journal of Risk & Safety in Medicine. Pp. S1-S5. DOI: 10.3233/JRS-227029.
Wilson, L., & Dervley, R. (2022). Pilot exploration of low-intensity psychoeducation workbook interventions in a prison setting, adapted for use throughout the COVID-19 pandemic. Journal of Criminal Psychology, 12(3), 46-59. DOI: 10.1108/JCP-02-2022-0006
CONTACT FORM
If you would like to find out more about the services we offer or join our expanding practice team, please make initial contact with us via our online Contact Form. We aim to respond to all enquiries within 48 hours:
Alternatively, please email us at: