Private ADHD Assessments & Diagnosis

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 or in-person appointments available

Adheres to NHS and 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 or in person at our Kent and Cheltenham clinics, adhering to NHS and NICE guidelines. Our Neurodevelopmental Assessors 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 Neurodevelopmental Assessors and adheres to NHS standards and NICE guidelines.

1

Pre-assessment & triage

We begin by collecting background information to confirm whether an ADHD assessment is appropriate and to ensure the process meets your needs.

2

Questionnaires

You and a chosen informant (such as a parent, partner, or teacher) will complete questionnaires exploring developmental history, attention patterns, and day-to-day behaviours.

3

Supporting information

Our team may request additional documents, such as school reports, previous assessments, or medical notes, to provide a complete understanding of your or your child’s presentation.

4

Diagnostic interview

Structured interviews are conducted online or in person:

For adults: a single 1½-hour interview with an assessor.
For children:a single 1½-hour interview involving both the child and their parent or guardian.

These sessions are designed to explore focus, organisation, impulsivity, and emotional regulation.

5

Diagnostic report

A detailed clinical report is prepared by our team and finalised by a Psychiatrist with extensive experience and training in ADHD and autism.

6

Post-diagnostic feedback

You’ll be invited to a feedback session to review your results, understand your diagnosis, and receive tailored recommendations for ongoing support. If ADHD medication is recommended, we can provide a seamless service through our sister company, RTN Medical — a CQC-registered service offering titration and prescribing support under the same trusted RTN network.

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.

NHS-Standard Assessments

Meets NHS and NICE diagnostic standards.

Ongoing Personalised Care

Ongoing ADHD-focused therapy and coaching.

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 Neurodevelopmental Assessors. Every ADHD assessment is clinically overseen by a Psychiatrist, and each patient has a diagnostic outcome meeting with a qualified therapist, such as a Psychiatrist, Pharmacist, or GP, to review results, confirm the diagnosis, and discuss next steps for support.

Are appointments available online or in person?

Private assessments can take place online or in person at our Kent and Cheltenham clinics.

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 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

For more details about how we look after your data please see our Privacy Policy

Get In Touch

Thank you! Your submission has been received!

Oops! Something went wrong while submitting the form.