This NHS commissioned Adult ADHD service is delivered by Rainbow Diagnostics.
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NHS Right to Choose · Adult ADHD Assessment

You're not lazy.
You might have ADHD.

Struggling with focus, organisation, or constant mental overload?
Take a quick check and get a proper diagnosis with specialist clinicians.

NHS Right to Choose
GMC-registered clinicians
Adult ADHD specialists
Fast appointments
Take the 60-second ADHD Test ↓
60-Second ADHD Test

Take the evidence-based 60-Second ADHD Test

Over the last 6 months, rate how often you experience each of the following. Based on the validated Adult ADHD Self-Report Scale (ASRS-v1.1).

ADHD often shows up like this:

You start tasks but struggle to finish them
You feel overwhelmed by simple responsibilities
You forget things even when they matter
You constantly feel mentally "on"
You procrastinate, then rush last minute
You feel capable, but underperforming

This isn't laziness. It may be ADHD.

A proper ADHD assessment — not just a questionnaire

Full specialist assessment (DSM-5 based)
Review of childhood and adult symptoms
Functional impact assessment
Comorbidity screening
Detailed clinical report
Treatment plan if diagnosed
GP letter included
GP communication included
NHS Right to Choose

NHS ADHD assessment — without the wait

You have the legal right to choose your ADHD provider in England. We accept referrals via the Right to Choose pathway, meaning:

NHS-funded assessment

No long local waiting lists

Faster access to diagnosis and support

For GPs & Clinicians

Referring a patient? Just find us on e-RS.

No referral forms needed. Simply locate us on the NHS e-Referral Service (e-RS) and submit your referral — we'll take care of the rest.

How to find us on e-RS

Service Name

Adult ADHD Assessment - Adult Mental Health - Rainbow Diagnostics - X9E9C

Location

RAINBOW DIAGNOSTICS (U7J0T)

This service is listed on e-RS under the above details. Use the service name and location above to locate us.

Important: Please ensure your referral comes through the appropriate NHS Right to Choose pathway so we can review it promptly and contact the patient with the next steps.

How it works

1

Take the quick ADHD test

Use our validated ASRS-v1.1 screening tool above.

2

If positive, speak to your GP

Request an NHS Right to Choose referral to Rainbow Diagnostics — or let us contact your GP for you.

3

Book your assessment

We will contact you to arrange a convenient appointment.

4

Comprehensive clinical evaluation

DSM-5 based assessment with a specialist clinician.

5

Receive diagnosis and treatment plan

Detailed written report and personalised treatment recommendations.

Why choose Rainbow Diagnostics

Experienced ADHD clinicians

Led by Dr Inder Sawhney, Consultant Psychiatrist, shortlisted for Psychiatrist of the Year (RCPsych, 2022).

CQC-regulated healthcare provider

Regulated by the Care Quality Commission for safe, effective care.

Multidisciplinary team

On-site diagnostics and experienced clinical support staff.

Trusted across Essex and England

Serving patients from Chelmsford, Essex and across England via virtual assessments.

Frequently asked questions about NHS ADHD assessment

Answers to common questions about adult ADHD diagnosis, treatment and the NHS Right to Choose pathway.

Stop guessing. Get clarity.

Take the first step towards understanding your ADHD.

[email protected]

Take the ADHD Test

Complete our 60-second screening test and get expert guidance on your NHS referral pathway