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Private ADHD Diagnostic Assessment Services UK

Private ADHD Assessments and Diagnosis

Available nationwide for adults and children aged six and above. Each ADHD assessment is delivered by experienced clinicians using gold-standard tools and a person-centred approach, helping every individual feel understood and supported throughout the process.

Start your assessment within 24 hours of booking

Dedicated Patient Support Coordinator – a single point of contact throughout your journey

Online appointments available across the UK

Adheres to NICE guidelines with gold-standard assessment methods

Clear recommendations for next steps, support, and treatment options

Book an assessment

Expert ADHD Assessments You Can Trust

ADHD assessments are available online across the UK, adhering NICE guidelines. Our experienced clinicians are highly trained in recognising how ADHD presents across different ages, genders, and life stages. By combining clinical expertise, evidence-based tools, and a compassionate approach, we provide clear, accurate assessments that reflect each individual’s unique strengths and challenges.

Common Signs of ADHD

ADHD presents differently in every individual. While many children and adults with ADHD share common traits, these experiences vary widely and are often shaped by environment, gender, and life stage. Recognising these patterns can help people better understand themselves and access the right support.

Common Signs In Adults

Intense focus on areas of interest, but difficulty sustaining attention on less interesting tasks

Preference for fast-paced environments or a sense of urgency to stay motivated

May misplace items or lose track of things that aren’t in clear view

Restlessness or difficulty switching off and relaxing

Impulsivity in decision-making or speaking without filtering

Heightened emotional sensitivity, including rejection sensitivity

Periods of high productivity alternating with low motivation or mental fatigue

Common Signs In Children

High energy levels and a strong drive to stay active or stimulated

Deep focus on topics, games, or activities that capture their interest

May find it hard to engage with tasks that feel repetitive or unstimulating

Can appear inattentive, often processing multiple thoughts or ideas at once

Preference for movement, talking, or fidgeting while concentrating

Strong emotional responses. Excitement, frustration, or disappointment can feel intense

May interrupt or act impulsively when enthusiastic

Easily distracted by external sounds or sights in busy environments

Finds it difficult to wind down or switch between tasks

May need extra time or support to organise belongings and schoolwork

Sensitive to perceived criticism or rejection, sometimes leading to withdrawal or frustration

What Happens in an ADHD Assessment?

Our ADHD assessments for children and adults are designed to provide clear, evidence-based insight into attention, focus, and behaviour. Each stage is led by experienced clinicians and adheres to NICE guidelines.

1

Before Your Diagnostic Interview

To ensure we’re the right service for you, we’ll begin with a brief triage process. You will also complete a set of questionnaires, alongside someone who knows you well (often referred to as an informant), helping us build a comprehensive understanding of your experiences. For a child assessment, these will be completed by the parent/guardian or the child’s school, where appropriate.

2

Your Diagnostic Interview

Your assessment takes place via secure video consultation with an experienced clinician and lasts up to 2 hours. For adults the DIVA (Diagnostic Interview for ADHD in Adults) tool is used. For children, the parent/guardian will be required to attend alongside the child.

3

Your Outcome & Report

In most cases, you’ll receive your diagnostic outcome during the appointment. Where further review is needed, your case will be discussed by our multidisciplinary team to ensure clinical accuracy and confidence in the diagnosis. Your detailed clinical report will be provided within 10 working days and, with your consent, shared with your GP.

Who We Help

We support children and adults, and their families, in understanding ADHD through clear, compassionate assessment and guidance designed to build confidence and lasting support.

Adults

We support adults seeking clarity and focus through professional ADHD assessments and personalised treatment recommendations to enhance daily functioning and wellbeing.

Adult ADHD Assessment

Child

We help children aged six and over with early ADHD assessments and tailored support to improve attention, behaviour, and emotional regulation at home and school.

Child ADHD Assessment

Support for ADHD

RTN Mental Health supports children, teenagers, and adults with ADHD, offering expert-led assessments, diagnosis, and personalised ongoing care to improve focus, organisation, and emotional wellbeing across all stages of life.

CBT for ADHD

Why Choose RTN Mental Health for Your Private Assessment?

Fast Assessments

Complete ADHD diagnosis with assessments starting within 24 hours, online or in person.

Nationwide Coverage

Access expert clinicians anywhere in the UK.

Prioritising Clinical Excellence

Clinician-led, adhering to NICE guidelines.

Ongoing Personalised Care

Ongoing ADHD-focused therapy and coaching.

What Our Patients Say

See what our patients have to say about their experience with RTN Mental Health. We’re proud to provide trusted, compassionate, and effective care that makes a real difference.

ADHD Assessment FAQs

Who can have an ADHD assessment with RTN?

RTN offers ADHD assessments for both adults and children aged six and above. Our assessments are designed for anyone who may struggle with focus, organisation, impulsivity, or emotional regulation, and who wants clarity and guidance from experienced clinicians.

Are appointments available online or in person?

Private assessments take place securely online via video call.

What happens during an ADHD assessment?

Each assessment is led by an experienced clinician using gold-standard diagnostic tools such as the DIVA, along with structured interviews and observations. Parents, caregivers, or partners may also be involved to build a complete picture of how ADHD affects everyday life.

Do you understand how ADHD presents differently across genders?

Yes. Our experts receive ongoing training to recognise how ADHD can look different across genders, ages, and cultural backgrounds. While boys often show more hyperactive traits, girls and women may mask their symptoms or experience more inattention, emotional overwhelm, or anxiety. RTN’s Neurodevelopmental Assessors are trained to identify these subtleties, ensuring every assessment reflects the individual’s true experience.

How soon can I start my assessment?

Once you book a private assessment, your process can begin within 24 hours. We don’t commit to fixed completion timeframes, as progress depends on completing pre-assessment forms and appointments.

What does “adheres to NICE guidelines” mean?

It means all our assessments follow the standards set by the National Institute for Health and Care Excellence (NICE) for diagnosing ADHD in both adults and children. This ensures your care meets the same clinical quality and safety standards used in NHS services.

What support is available after diagnosis?

Your report will include clear recommendations for next steps, including therapy, coaching, or medical review. Through RTN Therapies, we offer ADHD-focused Talking Therapies, while our sister company, RTN Medical, provides access to medication titration and prescribing if appropriate. This ensures continuity of care under one trusted team.

Can I pay for my assessment in installments?

Yes. Flexible payment options are available via Klarna allowing you to spread the cost of your assessment.

Contact Us

We help create a world where every unique mind is understood, so everyone can thrive.

Enquiries:

0333 772 1164

enquiries@rtnmentalhealthsolutions.com

For feedback, complaints and SAR requests:

feedback@rtnmentalhealthsolutions.com

71-75 Shelton St, London WC2H 9JQ

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