Dr Sonney Gullu-McPhee,
PsyD, MA, MSc, CPsychol, AFBPsS
Chartered Clinical Psychologist
ISST Certified Advanced Schema Therapist
Your Clinical Psychologist in Petersfield, Hampshire
Welcome. I am Dr. Sonney Gullu-McPhee, an HCPC-registered Clinical Psychologist, BPS Chartered Psychologist and ISST Certified Advanced Schema Therapist, with a Doctorate in Clinical Psychology. With over 15 years of training and experience, I provide bespoke psychological care to adults seeking meaningful and lasting change.
My work is evidence-based, formulation-led and informed by NICE guidelines. Rather than taking a one-size-fits-all approach, I draw on Cognitive Behavioural Therapy (CBT), Schema Therapy, EMDR, Compassion-Focused Therapy (CFT), DBT-informed techniques, mindfulness-based practices and polyvagal-informed strategies, integrating these in a way that reflects your individual needs and therapeutic goals.
I specialise in Schema Therapy, an evidence-based approach that helps people understand and change long-standing emotional and relational patterns, often rooted in early life experiences. These patterns can show up as chronic self-criticism, emotional dysregulation, difficulties with identity, or recurring challenges in relationships. Therapy offers an opportunity to understand these patterns more deeply and develop greater self-compassion, resilience, and a more secure sense of self.
I am passionate about supporting people from all walks of life, including those from diverse cultural backgrounds and those navigating a wide range of challenges and life transitions. Alongside psychological therapy, I provide comprehensive ADHD assessments for adults. Whether you are experiencing anxiety, trauma, grief, relationship difficulties, questions around identity, or the pressures of modern life, I offer compassionate, culturally sensitive support both in person at my Hampshire clinic and online.
Please schedule a complimentary 15-minute consultation to explore how we might work together.
Specialist, Evidence-Based Psychological Therapy in Petersfield, Hampshire
Your story is unique — and so is the care you receive.
You may be seeking support for anxiety, depression, ADHD, grief, trauma, relationship difficulties or the effects of chronic stress. Perhaps you find yourself repeating patterns that are difficult to change, carrying unresolved emotions from past experiences, or feeling increasingly overwhelmed by the demands of everyday life.
For some people, anxiety or low mood can make it harder to feel present, motivated or connected. For others, ADHD may affect concentration, organisation, emotional regulation, work or relationships. Whatever brings you to therapy, these difficulties often make more sense when understood in the context of your experiences, relationships and individual way of coping.
Psychological therapy can help you understand what is happening beneath the surface, recognise unhelpful patterns and develop more effective ways of responding. With compassionate, evidence-based support, it is possible to build greater emotional balance, resilience and a stronger sense of self.
Adult ADHD Assessment
I offer private adult ADHD assessments for individuals aged 17+, available in Petersfield, Hampshire and online across the UK.
Attention-Deficit/Hyperactivity Disorder (ADHD) can affect how individuals manage attention, organisation, time, and emotional regulation. Many adults experience ongoing challenges with focus, follow-through, and managing everyday responsibilities, often feeling overwhelmed by tasks that others seem to manage more easily.
Common experiences may include:
- Difficulty staying focused on tasks or conversations
- Trouble organising tasks, managing time, or meeting deadlines
- Frequently starting projects but struggling to complete them
- Feeling mentally overwhelmed by everyday responsibilities
- Restlessness, difficulty relaxing, or a constantly busy mind
- Impulsivity or making decisions quickly without fully thinking them through
A comprehensive ADHD assessment can help clarify whether these patterns may be related to Attention-Deficit/Hyperactivity Disorder. The assessment process involves a careful clinical evaluation including developmental history, structured interviews, questionnaires, and consideration of alternative explanations, conducted in line with recognised clinical standards and NICE guidelines.
Rather than relying on a single test or questionnaire, the assessment brings together multiple sources of information to form a careful clinical understanding of your experiences.
Understanding whether ADHD may be part of the picture can provide valuable insight and help guide the next steps for support and treatment.
Anxiety Therapy and Stress Management
Anxiety causes individuals to fear, avoid situations, and worry excessively. It’s an extremely common condition that can interfere with your relationships, performance at work, and personal well-being.
Common symptoms include:
- Persistently overthinking and worrying about things that disrupt your daily routine
- Avoiding situations that trigger anxiety
- Feeling a constant sense of dread, racing thoughts and panic attacks
- Feeling restless, constant fatigue, and having difficulty sleeping
Anxiety therapy helps you identify and remove unhelpful patterns causing your symptoms, allowing you to help regain control over your life. As a qualified psychologist in Petersfield, I can support you in overcoming anxiety, OCD, phobias, work-related stress, generalised anxiety disorder (GAD), panic disorder, and social and post-traumatic stress disorder (PTSD).
Depression Therapy and Emotional Well-Being
Depression and emotional dysregulation can make everyday tasks feel difficult. Feeling negative about yourself can chip away at your confidence and worsen over time. These feelings may create a toxic cycle that is difficult to escape without the right support.
It’s common to experience:
- Persistently feeling sad, hopeless, or empty
- Loss of interest in activities and avoiding social situations
- Self-doubt and excessive self-criticism
- Low energy levels and difficulty in focusing
My evidence-based therapeutic approach helps you overcome negative thinking patterns, low self-worth, loneliness, and perfectionism. For judgement-free depression therapy in Petersfield, get in touch.
Trauma and PTSD Therapy
Trauma can stem from multiple sources, be it emotional neglect, abusive relationships, or unexpected loss. Going through traumatic experiences in life can leave lasting emotional wounds, affecting your sense of self, trust in others, and personal growth.
It’s common to experience:
- A constant feeling of being in repetitive, unhealthy relationship patterns, which may lead to attachment issues
- Questioning of your self-worth, experiencing guilt, or shame related to past experiences
- Difficulty placing trust in others
- Emotional numbness or having trouble expressing emotions
As a Clinical Psychologist in Petersfield who specialises in Schema Therapy, my sessions allow you to process your experiences in a safe and calm environment. With my help, you’ll learn to develop healthier coping mechanisms and reclaim your sense of self.
ADHD Therapy and Executive Function Support
Living with ADHD presents a variety of challenges. You may find it tough to follow through with tasks, stay focused or manage your emotions.
Those with ADHD may experience:
- Trouble with organisational tasks
- The need to procrastinate often
- Feeling the pressure of routine tasks and responsibilities
- Frequent distractions, and, as a result, find it a struggle to maintain relationships
- A low sense of self and frequent feelings of frustration
My ADHD therapy in Petersfield will provide you with practical ways to manage your ADHD symptoms. You’ll learn to accept yourself, feel more confident prioritising your time and become better at managing your emotions.
Grief and Bereavement Therapy
Losing someone you love or transitioning through a major life change can leave you overwhelmed. Grief can take multiple forms, including:
- Feeling lost or unsure of what the future holds
- Struggle to manage emotions while juggling daily tasks
- Feeling lonely and craving connection
- Struggling to adjust to a new sense of identity and purpose
Grief can feel overwhelming, but it doesn’t have to take over your life. As a Clinical Psychologist in Petersfield, I provide a compassionate space for you to heal.
Relationship Issues
Life is filled with complex and emotionally demanding relationships that can drain you. Unresolved issues with your partner, family member, or friend can manifest into bigger problems, causing stress, conflict, and emotional distress in your life.
You may experience:
- Frequent misunderstandings and trouble communicating
- Emotional disconnection
- Trouble setting healthy boundaries
- Repeated patterns of tension and conflict
Working as a Clinical Psychologist from my clinic in Petersfield and online, I can help you understand and overcome unhealthy patterns, improve communication, and build stronger relationships.
Parenting Help
Being a parent is a rollercoaster, both rewarding and challenging. With this, comes unique pressures and emotional demands that can be difficult to navigate. Whether you’re suffering with post-natal depression, or you’re trying to better understand your teenager, it’s natural to feel overwhelmed or uncertain.
You may experience:
- Trouble trying to balance work and parenting responsibilities
- Constant guilt, low mood or question your parenting choices
- Difficulty in managing your child’s emotional and behavioural needs
- Feeling emotionally exhausted and in need of support
My therapy in Petersfield gives parents emotional support and practical tools to experiment with. Feel more confident, calm, and connected as a parent.
Personality Disorders and Emotional Regulation Therapy
Struggling with intense emotions or personality difficulties can impact your relationships, sense of identity, and overall well-being. Whether you face overwhelming feelings, difficulty controlling your reactions, or patterns of behaviour that feel hard to change, you don’t have to navigate these challenges alone.
It’s common to experience:
- Persistent feelings of shame, anxiety, or emotional instability
- Difficulty forming or maintaining healthy relationships
- Fear of abandonment or intense sensitivity to criticism
- Struggles with anger, impulsivity, or emotional overwhelm
As a Clinical Psychologist in Petersfield specialising in Schema Therapy, I provide an empowering space where you can explore and understand the underlying patterns that contribute to emotional and relational difficulties. Get in touch today to start your journey toward emotional balance and healthier relationships.
Life Transitions and Adjustments
Change is the only constant in life, but certain life events, such as career changes, relocation, giving birth, separation, divorce or retirement can come with its own share of emotional difficulties.
You may feel unsure about:
- Your new identity and sense of purpose
- How to adjust to new responsibilities
- How to cope with the emotions that come with the change
- How to navigate feelings of loss, fear, or regret
Helping you through various transitions in your life with confidence and patience, my therapy in Petersfield works to openly embrace change and encourage positivity.
Kind Words
“I cannot recommend Dr. McPhee enough! Her professionalism and genuine care shines through in every session. I’ve been seeing her virtually and in person, and the convenience of her flexible scheduling has made it so easy to prioritise my sessions despite a busy schedule. She’s located in Petersfield, but her virtual appointments mean she’s accessible no matter where I am.”
Why Choose My Therapy Services?
While conventional therapy approaches only focus on managing symptoms, I aim to address the deeper psychological influences and patterns that shape your thoughts, emotions, and relationships.
With a Doctorate in Clinical Psychology (Psy.D), I bring advanced training and expertise to help you navigate even the most complex emotional challenges. By integrating Schema Therapy, CBT, CFT, mindfulness, Polyvagal informed tools and DBT-informed strategies, I create personalised approach that aligns with your unique needs and goals.
Furthermore, with extensive experience working in multicultural environments across the UK, USA, Turkey and Hawaii, I can provide culturally appropriate, tailored therapy that respects your cultural values and backgrounds.
You’ll find a warm, supportive, and non-judgmental space to explore your thoughts and emotions. With flexible therapy options, you can choose between online, or in person sessions, based in Hampshire.
For a positive, long-lasting therapy experience that goes beyond superficial solutions, take the first step towards healing.
Types of Therapy I Offer in Petersfield
Your challenges are unique, so your therapy should be tailored to reflect that. I take an integrated approach to my practice by combining your experiences, cultural background, and environmental factors to address your specific needs and challenges. This integrative approach uses a variety of evidence-based methods for lasting positive change.
Here are the various therapeutic approaches I use to tailor your treatment:
Cognitive Behavioural Therapy (CBT)
CBT is an evidence-based approach designed to help identify and challenge negative though patterns that contribute to emotional distress. It is particularly effective for those suffering with anxiety, depression, or trauma. Through CBT, we’ll work together to recognise unhelpful thinking patterns and habits and replace them with healthier, more constructive perspectives, fostering positive emotional and behavioural change.
Schema Therapy
Schema therapy is a powerful therapeutic approach that delves into deep-rooted emotional beliefs and patterns often developed during childhood or earlier life experiences. Together, we will identify these patterns, understand their origins, and work towards changing them for a more fulfilling way to relating to yourself and others.
Dialectical Behaviour Therapy (DBT)-Informed Techniques
DBT-informed techniques can be helpful in managing intense emotions, low mood and impulsive behaviours. This approach encourages communication, improves relationships and helps individuals through particularly tough situations.
EMDR Therapy (Eye Movement Desensitisation and Reprocessing)
EMDR is an evidence-based, trauma-focused therapy that helps the brain reprocess distressing memories and reduce emotional and physical overwhelm. Using gentle bilateral stimulation — such as eye movements or tapping — EMDR activates the brain’s natural healing system, allowing “stuck” experiences to be integrated more adaptively. It is highly effective for trauma, anxiety, intrusive thoughts, and longstanding shame-based patterns, and is recommended by NICE and the WHO for PTSD. Together, we’ll work safely and at your pace to reduce distress, build grounding skills, and support lasting emotional change.
Compassion-Focused Therapy (CFT)
My CFT therapy sessions are ideal for those struggling with self-criticism, shame, and low self-worth. This therapy encourages you to be kinder to yourself and become more emotionally resilient.
Polyvagal-Informed Practices
These practices focus on the link between your body’s nervous system and how you regulate emotions. I may use these practices to understand your natural stress response and to encourage you to feel safe, calm and protected.
Therapy in Petersfield, Hampshire with Me, Dr McPhee
Life can be overwhelming, but you don’t have to face it alone. If you’re ready to break free from what’s holding you back and take the first step toward healing and growth, I’m here to help.
I offer in-person therapy sessions at The School Master’s House, College Street, Petersfield, Hampshire GU31 4AG, with complimentary parking available nearby on College Street for up to three hours.
Book your complimentary 15-minute phone consultation today to explore how I can support you on your journey. Whenever you’re ready, feel free to get in touch and begin creating the life you deserve.
Email: info@drmcphee.co.uk
Call: +44 7584354041