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Online ADHD & Autism Assessments

Trusted specialists delivering online NICE compliant assessments for ADHD & Autism

Our assessments are conducted in accordance with the following NICE guidelines: ensuring high standards of evidence-based practice, promoting patient safety, and delivering quality care.


Autism spectrum disorder in adults: Diagnosis and management (1.2 Identification and assessment)


Attention deficit hyperactivity disorder: Diagnosis and management (1.3 Diagnosis)


Autism spectrum disorder in under 19s: Recognition, referral and diagnosis (1.5 Autism diagnostic assessment for children and young people)

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To offer timely and affordable neurodiversity diagnostic assessments to all

A full diagnostic report by an HCPC Registered Psychologist

Appointments available within 3 months of initial reservation

To provide you with a detailed report that you can share with relevant parties

Post-diagnostic therapy packages available plus referrals to relevant support services

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Contact our friendly team to schedule your assessment today

*Please note, we are currently facing a high demand for child ASD assessments and therefore our process may take up to 16 weeks.

ADHD Diagnostic Assessment

from £895

A full ADHD diagnostic assessment from £895 (available for anyone aged 6 or older).

Autism Diagnostic Assessment*

from £995

A full Autism diagnostic assessment from £995 (available for anyone aged 6 or older).

Combined Diagnostic Assessment

from £1,590

Full combined ADHD and Autism diagnostic assessment from £1,590 (currently available for anyone aged 6 or older).

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Meet our expert, friendly and experienced team

Get to know our expert, friendly, and highly experienced assessment and junior support team at RTN Mental Health Solutions, who will be on hand to help guide you every step of the way on your journey.

Our Senior Assessment Team

Dr Renata Fialho

Senior Clinical Psychologist

Our Junior Support Team

Tom Seldon

Diagnostic Services Administrator

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Enjoy the convenience and simplicity of our hassle-free process

RTN Mental Health Solutions provides full diagnostic assessments for neurodiverse conditions. 

We are aware that some NHS waiting times for diagnosis are over two years. We are also aware that private assessments can be out of the financial reach of many people.

We, therefore, decided it was time to create an affordable alternative that is committed to a speedy turnaround time so that clients can get the assistance they need more quickly.

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Enjoy the ease and convenience of our online booking system, where we gather necessary information and securely process payments, providing you with a smooth and effortless journey as you book your reservation.

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Diagnostic Interview

This is an online video session with one of our Clinicians. The interview has a set structure in order to obtain the information needed to make a diagnosis.

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In order to assist with diagnosis, there are a number of questionnaires that we will be sending out by email for completion. For diagnosis, we need to collect corroborating evidence so we may need to send a questionnaire to a parent/carer, partner, close friend, or teacher.

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Diagnostic Report

This detailed report summarises the methodology, process and outcomes of your assessment. A diagnostic decision is included.

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Mental Health Screening

We are aware that mental health issues are common amongst the neurodiverse community. We have therefore decided to include a mental health assessment. This will help us build a picture of the impact the neurodiverse condition may be having on your mental health and will aid us in being able to make appropriate recommendations for aftercare.

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Aftercare and Signposting

Your diagnostic report will include some recommendations for aftercare and signposting to useful services. We also offer post-diagnostic therapy packages via our network of neurodiversity specialist therapists. We can also offer post-diagnostic review sessions should you wish to discuss your report in more detail.

Book a clinical diagnostic assessment with one of our friendly, expert team

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