Private Psychology & Therapy Clinic in London
Evidence-Based Therapy and Specialist Assessments in Marylebone
At Regal Private Therapy Practice, we provide expert psychological care for adults, adolescents and children from our clinic in Marylebone, London’s renowned Harley Street medical district.
Our team of highly experienced Clinical Psychologists deliver evidence-based therapy and specialist assessments, including ADHD assessments, autism assessments, and neurocognitive evaluations.
Whether you are seeking support for anxiety, burnout, relationship challenges, or clarity around ADHD or autism, our clinicians provide confidential, personalised care with no long waiting lists.
We offer both in-person therapy in London and secure online therapy across the UK.
Why Clients Choose Regal Private Therapy Practice
Clients choose Regal Private Therapy Practice because we combine clinical expertise with a genuinely personalised approach.
We frequently work with:
Professionals experiencing burnout or workplace stress
Adults seeking ADHD or autism assessments
Parents concerned about their child’s emotional wellbeing
High-performing individuals seeking clarity, focus and performance support
Individuals navigating anxiety, depression or life transitions.
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All of our clinicians are Doctorate-level Clinical Psychologists with extensive experience working in the NHS and private practice. Our team specialises in evidence-based psychological therapies recommended by NICE.
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No two people are the same. We deliver bespoke, outcome-driven treatment plans focused on measurable, lasting change and an exceptional client experience.
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We provide gold-standard ADHD and autism assessments for adults and children and take a neuroaffirmative approach that recognises and respects neurodiversity.
That means we focus on understanding individual strengths, differences and support needs rather than viewing neurodevelopmental conditions solely through a deficit-based lens.
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Unlike many services, we provide rapid access to therapy and specialist assessments without the long waiting lists often associated with mental health services.
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Our clinic is located in Marylebone within the Harley Street medical district, offering a discreet and comfortable setting for therapy.
A Calm and Welcoming Therapy Environment
Take a short tour of Regal Private Therapy Practice and see our welcoming clinic space in Marylebone, located in London’s Harley Street medical district.
Our clinic space has been carefully designed to create a calm, comfortable and confidential environment where clients can feel at ease during therapy and assessment sessions.
As seen in 
Specialist ADHD & Autism Assessments in London
Regal Private Therapy Practice provides gold-standard ADHD and autism assessments for adults, adolescents and children.
Our assessments follow NICE-aligned diagnostic frameworks and include comprehensive developmental interviews, validated assessment tools and detailed clinical reports.
Our ADHD assessments help individuals understand symptoms such as difficulties with focus, impulsivity, executive functioning and emotional regulation.
Assessments include:
Comprehensive diagnostic interview
Standardised ADHD assessment tools
Developmental history
Detailed clinical report
ADHD Assessments (Adults & Children)
Autism Assessments (Adults & Children)
Our autism assessments provide clarity for individuals who may be experiencing differences in social communication, sensory processing or behavioural patterns.
Assessments are conducted by experienced clinicians using gold-standard diagnostic tools and structured evaluation methods.
Our Therapy & Psychological Services
We provide a comprehensive range of psychological services for adults, adolescents and children.
Our clinicians support clients experiencing:
Anxiety and stress
Depression and low mood
Burnout and workplace stress
Relationship difficulties
Trauma and PTSD
ADHD and neurodiversity
Parenting and family challenges
Performance psychology for professionals and athletes
We combine evidence-based therapies such as Cognitive Behavioural Therapy (CBT), EMDR, and psychological coaching to help clients achieve meaningful and lasting change.
Meet Our Clinical Psychologists
Regal Private Therapy Practice was founded by husband and wife, Dr Bradley Powell and Dr Ashleigh Powell, both highly experienced Clinical Psychologists with extensive backgrounds in NHS and private mental health services.
Their vision was to create a psychology practice that combines clinical excellence, compassion and personalised care, ensuring every client receives the highest standard of psychological support.
Our team works collaboratively to provide specialist therapy and assessments tailored to each individual.
“Our practice is grounded in warmth, compassion, and a genuine commitment to helping you feel better. We understand that seeking support can feel like a big step, which is why we take the time to connect personally with everyone who reaches out.”
Dr Ashleigh Powell
Get started in 3 simple steps
1. Consultation
Book a free 15-minute no obligation call with one of our Clinical Psychologists. An expert will listen to your concerns and discuss support options. If you proceed, we’ll arrange an initial assessment at your convenience.
2. Assessment
The initial assessment session lasts approximately 50-60 minutes either online or in person at our Marylebone clinic; the choice is yours. Your clinician will ask you questions to get to know you, understand your difficulties and any goals for treatment.
3. Treatment Plan
At the end of the assessment, we will discuss the recommendations and personalised treatment plan and you can decide if this fits well for you. Our goal is to help you achieve your goals as quickly as possible using evidence-based approaches.
Mental Health Therapy in Marylebone or Online
In-Person Therapy in London
Our clinic is located in Marylebone, just minutes from Great Portland Street and Regent’s Park stations within London’s prestigious Harley Street medical district.
Clients benefit from a calm, welcoming clinical environment designed to support confidential and comfortable therapy sessions.
Online Therapy Across the UK
For many people, online therapy provides the flexibility to access support from home or while travelling.
We offer secure video therapy sessions, allowing clients across the UK to work with our expert psychologists.
Research shows that online therapy delivers outcomes comparable to in-person therapy for many psychological conditions.
What our clients say
Request a consulation
020 3835 6419
info@regalprivatetherapypractice.co.uk
4 Devonshire Street, Marylebone, London, W1W 5DT
At Regal Private Therapy Practice, we welcome self-paying clients, and we’re also covered by all major private healthcare insurance providers.
Please don’t hesitate to contact us if you have any queries.
