RDA Autism & ADHD Practice

Specialist assessments,
built around you.

A small, multi‑disciplinary practice for autism, ADHD and mental health assessments. For children and adults. In Harley Street, in Ware, or wherever you are.

48‑hour callback No GP referral CQC‑regulated NICE‑aligned reports
Registered · Regulated · Recognised
HCPC Registered General Medical Council British Psychological Society Royal College of Psychiatrists Royal College of Speech & Language Therapists Royal College of Occupational Therapists Care Quality Commission Cyber Essentials
01 Welcome

A practice built on collaboration, not on a checklist.

RDA Autism & ADHD Practice provides specialist, high‑quality and individualised assessments for children and adults seeking a private autism or ADHD diagnosis. Our clinicians work collaboratively, with a strong commitment to neuro‑inclusion at every stage of the process.

We value each individual's personal journey, adopting a trauma‑focused approach. Alongside diagnostic assessments, we offer specialist services across psychiatry, psychology, speech & language therapy and occupational therapy.

RDA is regulated by the Care Quality Commission and follows guidelines set out by the National Institute for Health and Care Excellence. No GP referral is required to book in.

02 Why RDA

Care that's accredited, research‑led, inclusive and trauma‑informed.

i.
Accredited

A GMC‑registered Consultant Child & Adolescent Psychiatrist, HCPC‑registered Counselling and Clinical Psychologists, an HCPC Occupational Therapist with Sensory Integration practice, and an HCPC Speech & Language Therapist.

ii.
Research‑led

A small, multi‑disciplinary, dedicated team drawing on current evidence‑based research, and lived neurodivergent experience.

iii.
Inclusive

Neuro‑inclusive and affirming theories, research and experiences shape our service. Difference, not deficit.

iv.
Trauma‑informed

Many autistic people and ADHDers experience trauma in cumulative, everyday ways — and trauma can present differently in neurodivergent people. We hold space for that.

03 Team

Specialists who listen first.

All practitioners
04 Process

Three considered steps. No surprises.

Step one
Initial assessment

A booking conversation gathers any background, and a clinician sends initial screening tools that help shape your individualised treatment plan.

Step two
Specialist assessment

Book the assessment that fits — ADHD, autism (ADOS‑2), child or adult psychiatry, speech & language, occupational therapy and more.

Step three
Follow‑up support

A diagnosis means different things for different people. We continue alongside you, with recommendations, signposting, and optional follow‑ups.

Read the full process
05 Fees

Transparent pricing. Concessions available.

Each assessment involves a robust process: gathering background information, reports from different sources, and a diagnostic assessment. We offer some concessionary clinics at a reduced rate — please call us for more information.

ADHD assessments

Completed preferably in person, or online via secure link. A comprehensive report with recommendations and signposting advice follows.

Child (up to 18)
Format
Face‑to‑face or online · 60–90 min
From
£1,400
Adult (up to 60)
Format
Face‑to‑face or online · 60–90 min
From
£1,200
Autism assessments

Two appointments, with one ideally in person, including the ADOS‑2 observation. A comprehensive report with recommendations and signposting follows.

Child / Young person
Format
Two appointments · In‑person ideal
From
£2,700
Adult
Format
Two appointments · Face‑to‑face or online
From
£1,400
See all fees
06 Locations

Three places to be seen.

We encourage in‑person assessments where possible. Comfort, safety and accessibility look different for everyone, so most assessments can also be completed online.

The London clinic on Harley Street
Harley Street
London

10 Harley Street
London W1G 9PF

0203 906 1488

The Ware clinic, Hertfordshire
Hertfordshire
Ware

6–7 East Street
Ware SG12 9HJ

0203 906 1488

Secure online assessments, UK-wide
UK‑wide
Online

Secure video appointments from anywhere in the UK, via a private link sent before your session.

Book an online slot

Ready to take the first step?

Leave your details and we'll be in touch within 48 hours. Or call us directly. No GP referral needed.

Request a callback Call 0203 906 1488