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Meet the Team

Clinical and Counselling Psychologists are trained in many different psychological approaches which means we are able to use the ideas that are best suited to helping you make meaningful changes in your life.


It is important that we use the approaches that will help you make sense of your current difficulties, change unhelpful patterns and embed new ways of thinking, feeling and relating which will help you in the longer-term.

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Dr Karen Quatermass  
PsychD.  CPsychol.  AFBPsyS.

I have been in private practise since 2006, assessing and treating a broad range of psychological issues with adults, teenagers and children. 


Our aim for Questa is to bring together talented clinicians who collaborate to deliver the best possible outcome for clients.

Questa provides therapy as well as gold standard testing, assessment and broad-ranging support for neurodevelopment issues for children, families and adults.

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Bandna Rekhi

CPsychol, AFBPSS

Clinical Director

With almost 15 years of experience in the field of psychology, I have worked in various settings including universities as Assistant Professor, the NHS as Senior Psychologist, advisor and supervisor for trainees and charities, among others.

I follow a person-centred, multi-formulation approach to understand the clients’ presentations and assist them in exploring adaptive styles of coping in their onward journey. 

With a curious and non-judgemental attitude, I approach the privilege of being there to unpack the narrative that clients bring to therapy and explore ways to enable them to lead a more meaningful and values congruent life.

Rachael Cass

Rachael is the angel who keeps us organised,  Whilst studying for a degree in Criminal Investigation with Forensic Psychology she finds time to handle all of our customer enquiries and manages our office functions with patience and humour. 

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Emily Williams
MA (Hons), MSc, MBPS
Assistant Psychologist 

Emily is an Assistant Psychologist.  She may be the first person that you speak to and is committed to ensuring the best possible outcome.

After graduating with her master's in forensic psychology Emily gained experience within forensic inpatient units working with children, young people and adults with a range of mental health conditions. 

Her background also includes working with victims of domestic abuse and delivering interventions for children and young people in the community within schools and colleges. 

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Emmy Ligard
Assistant Psychologist 

I’m Emmy and an Assistant Psychologist at Questa. I will complete my Master degree in Clinical Psychology in June of 2022.  The 5 year course has taught me a broad range of psychological approaches, skills, and models. I’ve worked clinically with both adults and children when I’ve conducted research, assessed patients’ wellbeing, and planned and implemented individualised treatments. 

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Sidonie Powles
BSc (Hons), MBPS
Assistant Psychologist

Sidonie completed her BSc in Psychology in 2021, and is now completing her MSc in Clinical Psychology.


Her experience includes working with children with ADHD and Autism Spectrum Disorder, as well as assisting adults with diverse mental health needs including anxiety and depression. 

Our support team may be your first point of contact.
Their role is to support our clients throughout their journey at Questa. 

Adult autism and ADHD assessment

Adult clinical lead

Dr Joanne Coombs

BSc, PsychD.  

Consultant Clinical Psychologist

I am a Consultant Clinical Psychologist with over twelve years’ experience of providing high-quality, personalised clinical psychology services to individuals, couples, families, teams and services.  

I lead the adult Autism Spectrum Conditions (ASC) service and therefore primarily provide assessments and some post-diagnostic and therapeutic work for adults with ASC and their supporters. 


Dr Sophie Hughes

BSc (Hons), MSc, PGCert, D.Clin.Psych

Clinical Psychologist

I am a Clinical Psychologist with experience of providing psychological assessment, formulation and interventions for children, adults and teams within the NHS and other organisations. I currently work for the NHS in an autism diagnostic service, I offer private adult autism assessments and I am a university lecturer in Psychology. 


I am trained in a range of psychological models and therapies including EMDR (levels 1, 2, 3, and 4), Cognitive Behavioural Therapy and Compassion Focused Therapy. I am registered as a Practitioner Psychologist with the Health Care Professional Council (HCPC).

Child autism and ADHD assessment

Young person's clinical lead
Dr Natalie Roberts
BSc (Hons), Dip. Psych., D. Clin. Psych.
Chartered Clinical Psychologist

My absolute passion and area of speciality is working with children, young people and their families across the broad range of mental health areas that affect children and young people.

I have worked in NHS specialist child and adolescent mental health services since 1999, working in community and in-patient settings.  I have worked in an NHS specialist Child and Adolescent Mental Health Service.  My experience and expertise includes assessment and diagnosis of neurodevelopmental conditions such as autism and ADHD.


Dr Hannah Faust

BSc (Hons), D.Clin.Psy., C.Psychol.

Chartered Clinical Psychologist

I have worked in NHS Child & Adolescent Mental Health Services (CAMHS) since qualifying from the doctoral programme at University College London in 2003, providing high quality treatments to children, young people and their families or carers with a broad range of mental health difficulties, with varying degrees of severity and complexity.

Every child is unique and will have their own set of strengths and areas of difficulty, and as such therapy will be uniquely tailored to that child or young person’s needs. Building a trusting, warm and positive therapeutic relationship is absolutely vital to my way of working, in order that we can create a safe therapeutic space that can lead to different and creative ways of thinking and being.

Educational Psychology

Behaviour Assessment

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Julia Alfano

BA(Hons), P.G.C.E. MSc. Ed.Psy. MSc. Foren. Psy. MBPS, C.Psychol.

Educational / Child Psychologist 

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Charlie Giles

Board Certified Behaviour Analyst 

I am a fully qualified chartered Educational Psychologist, registered with the Health Care Professionals Council (HCPC), providing psychological assessment of cognition and learning, language and communication, social and emotional needs, and physical and sensory needs.


I have extensive experience working with children, young adults and families in a variety of contexts including schools, colleges, pre-schools, foster and residential care, secure units, with CAMHS, Behaviour Support Teams, the Virtual School, Social Care, and  Youth Offending Teams.


I take a systemic approach to working with children and young people. I look at the presenting concerns and needs of the individual and explores what is happening in their life.  This is carried out through a mixture of direct assessment and consultation with the family and place of education.  Influencing factors may include family, school, learning difficulties, friendship difficulties, bereavement or some significant life event. I believe in working closely with parents to mobilise support for their child/teen and will offer personalised therapeutic support and guidance for the family.

I am Charlie Giles and I’m a board certified behaviour analyst. I work with both children and adults.


I completed my masters in behaviour analysis in 2008 and then went on to become a certified behaviour analyst in 2009. I have a particular interest in working with people with a diagnosis of autism and/or learning disabilities and helping them better understand their behaviours that at times can prevent them from living the life they want and achieving their goals.

I work with people and their families/networks to better understand complex behaviours of concerns through the completion of a functional assessment. Following this they would receive a support plan including information about changes to their environment that could be made, skills people would benefit from learning to replace challenging behaviours, and also how those around could respond to reduce the likelihood of the challenging behaviours continuing in the future.

Speech and Language Therapy


Christina Hawkins

BA (Hons), PG (Dip), MSc, MRCSLT

Speech and Language Therapist 

I am a speech and language therapist with over 16 years of experience working with children with a range of communication needs. 


I specialise in providing assessment and therapy for children with developmental or acquired language difficulties, social communication difficulties and autism spectrum disorder (ASD). 

I started in private practice in 2019, having previously worked in a number of specialist neurodevelopmental teams in the NHS.  I offer speech and language assessment and therapy for children and teenagers and work within multidisciplinary teams to provide diagnostic assessment for ASD or other neurodevelopmental conditions.

Psychological Support

Dr Lucy Furlong  
BSc (Hons), Psych D., CPsychol.

Chartered Clinical Psychologist

I am a chartered clinical psychologist with 15 years’ experience working in the NHS and private practice, offering assessment and therapy for individuals and groups. I assess and treat adolescents and adults with a broad range of mental health problems. Using an evidence based approach, I draw on a range of therapeutic models to tailor the therapy to the need of the individuals I work with.

Dr Damaris Stuart-William Consultant Clinical Psychologist
Dr Danielle McLymont
BSc (Hons), MSc, PsychD, CPsychol
Chartered Clinical Psychologist

I am a qualified Clinical Psychologist with over 14 years’ experience of working in the the NHS and in private practice. I have worked across various child and adolescent mental health service (CAMHS) teams and in acute paediatric hospital settings, to improve psychological and physical well-being. I offer psychological assessment and therapy to children, young people and adults with a broad range of mental health and emotional difficulties. 


I am trained in a range of evidence based psychological models and therapies; including Cognitive Behavioural Therapy (CBT), Acceptance and Commitment Therapy (ACT), systemic and family therapy and Eye Movement Desensitization and Reprocessing (EMDR). I also offer cognitive assessments to look at a child’s intellectual ability and to identify the strengths and weaknesses in their cognitive profile. I am registered as a Practitioner Psychologist with the Health and Care Professions Council (HCPC). 

Dr Damaris Stuart-William is a Consultant Clinical Psychologist with a wealth of experience in various roles within the NHS as well as in the private sector. 

She has extensive experience in the inpatient and outpatient management of children and young people. 

Damaris remains interested in new developments in the field and applies the best current evidence- based treatments and guidelines to help her clients. 

She follows a person centred, multi-formulation approach to understand clients’ problems and their narratives. Further, she draws on techniques from Cognitive Behavioural Therapy (CBT), mindfulness-based approaches, including Acceptance and Commitments Therapy (ACT), among other insight-oriented therapies. She is also trained in Eye movement desensitization and reprocessing (EMDR) therapy.

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Dr Jason Hill
BSc (Hons), MSc, PhD

Dr Jason Hill offers a safe and non-judgemental space where you can talk in confidence, with a view to working collaboratively together to address some of the challenges you currently face.

Jason has experience of providing one-to-one and group-based clinical interventions in the NHS and within the charity sector, targeting eating disorders, addictions, and specific mental health outcomes. 

He completed his PhD in Psychology in 2022. His research included investigating the behavioural and psychophysiological processes underlying the human attention system, and how patterns of cognition and attention relate to clinical outcomes, namely depression and anxiety.

Dr Hill provides evidence-based psychological interventions and mindfulness-based training.