About our ADHD Assessment and Diagnosis Service for Children and Adults in Buckinghamshire, Oxfordshire, Hertfordshire, Bedfordshire, and across the UK
Professional, Confidential, and Understanding ADHD Assessments

Reviewed by Consultant Director, Lorna Wykes.
At Home Counties Therapy, we provide private assessments and diagnosis for ADHD in children and adults from our clinic in Buckinghamshire. We’re also able to offer virtual assessments for clients across the UK or worldwide. Every assessment takes place in a confidential, supportive, and non-judgemental environment, carried out by qualified professionals who understand the complexity of ADHD.

Why Consider Booking a Private ADHD Assessment?
For Clarity, Speed, and a Clear Plan for Moving Forward
Whether you or your child is experiencing challenges with focus, impulsivity, or emotional regulation, or you’re already on a lengthy NHS waiting list — a private ADHD assessment can bring clarity and direction.
Many families and individuals come to us because they want a professional diagnosis without the long delays. An accurate ADHD diagnosis helps unlock access to support, treatment options, educational adjustments, and strategies that make everyday life more manageable and fulfilling.
For children, a diagnosis enables parents and teachers to better understand their needs, adapt learning environments, and provide appropriate support.
For adults, it can bring life-changing insight into long-standing difficulties and open the door to practical coping strategies, therapy, and improved quality of life.
How We Assess for ADHD
Our assessments follow criteria outlined in the DSM-5 (Diagnostic and Statistical Manual of Mental Disorders). You’ll be guided through a structured yet comfortable process, involving a detailed clinical interview, symptom checklists, and behavioural questionnaires.
If the assessment is for a child, we work collaboratively with the parent and child, and may involve teacher input where relevant.
What We Look For During an ADHD Assessment
Inattention
- Difficulty maintaining focus
- Easily distracted or forgetful
- Frequently losing items (e.g., keys, schoolwork)
- Trouble organising tasks or following instructions
Hyperactivity and Impulsivity
- Constant movement or fidgeting
- Interrupting conversations or acting without thinking
- Difficulty waiting their turn
- Talking excessively or blurting out answers
Emotional and Behavioural Indicators
- Mood swings or emotional outbursts
- Frustration with routine tasks
- Low self-esteem
- Anxiety, depressions, or sleep problems often present alongside ADHD

Our Clinic Environment
Where we carry out ADHD Assessments
Our assessments are offered at our welcoming, private clinic in Aylesbury, Buckinghamshire. We aim to make you feel at ease from the moment you arrive. For those unable to attend in person, we also offer assessments via secure video call, or at an agreed location that ensures privacy and comfort.
We understand that work, school, or family responsibilities can make scheduling difficult — which is why we offer out-of-hours appointments where needed.

Post-Assessment Support
What Happens After a Diagnosis?
Receiving a diagnosis can feel both validating and overwhelming. For some, it’s a relief to understand long-term struggles; for others, it can take time to adjust. Our role is to guide you through the next steps with compassion and expertise.
We’ll work with you to create a realistic, personalised support plan, which may include:
- 1:1 therapy
- Behavioural coaching and DBT
- Support with school or workplace recommendations
- Guidance for parents and caregivers
- Out-of-hours phone support and ongoing check-ins
Clinical Costs
How Much Does a Private ADHD Assessment Cost and What’s Included?
Private ADHD assessments at our Buckinghamshire clinic start from £750.
This includes:
- A comprehensive two-session assessment (typically over two days)
- In-depth history-taking and symptom evaluation
- Diagnostic screening across multiple criteria
- A written diagnostic report
- Optional liaison with schools, employers, or GPs
- Follow-up guidance and support plan
Frequently Asked Questions About Our ADHD Assessment Service
We understand that getting a diagnosis is an important step for moving forward with effective treatment. We will ensure you are booked in for an assessment as soon as possible. This is usually within 1 week of being in contact with us.
Typically an assessment will be over two days, with each session lasting approximately 1.5 hours.
Our ADHD assessments start from £750. This pays for the time that you will spend with your assessor along with any relevant reports and treatment plans that come after your assessment appointments.
We offer a high level of confidentiality and will not contact others without your consent. The exceptions to this are if you are at imminent risk to yourself or another person. We will go through this with you in more detail but please be reassured that our aim is to keep your confidence.
We make our service accessible to clients across the UK and worldwide, offering assessments at our Buckinghamshire clinic, at a location convenient for you, or online through a secure video call.

Book an Assessment for Autism
If you're ready to take the next step, here's how to book an appointment with our team
Booking an assessment is quick, simple, and confidential. We recommend booking an initial complimentary call with our team before booking an assessment. This allows you to ask any questions you might have beforehand.
You will then be able to book your assessment at the end of the call.
Please use the contact form to request a complimentary call back from our clinical admin team and they will get in contact within 24 hours using your preferred contact method.