Private ADHD Assessment Cost UK 2026: Providers & What's Included

A private ADHD assessment typically costs between £500 and £2,000 in the UK, though some providers start from £250. Here's a full breakdown of what you'll pay, what the assessment involves, and how to access a free NHS-funded route.

What does a private ADHD assessment involve?

A diagnostic ADHD assessment is a structured clinical evaluation carried out by a qualified psychiatrist or specialist nurse prescriber. It typically includes:

• Clinical interview — a detailed discussion of your symptoms, history, childhood behaviour, and daily functioning (60-90 minutes)
• Standardised rating scales — validated questionnaires such as DIVA-5, CAARS, or Conners scales
• Collateral information — school reports or a questionnaire completed by a parent, partner, or someone who knew you as a child
• Differential diagnosis — ruling out other conditions that mimic ADHD (anxiety, depression, sleep disorders, ASD)

The full process usually takes 2-3 hours, either in a single session or split across two appointments.

How much does a private ADHD assessment cost?

The initial assessment is the largest single cost. However, if you are prescribed medication, titration (the process of finding the right dose) adds £200-500 over 3-6 months, with appointments every 2-4 weeks.

Provider comparison

Prices as of April 2026, based on publicly listed fees. Costs vary by location, complexity, and whether the assessment is for an adult or child.

NHS Right to Choose: free ADHD assessment

The NHS Right to Choose (RTC) lets you request that your GP refers you to an approved private provider for your ADHD assessment, funded by the NHS. This means the assessment and medication titration are free.

How it works:

1. Ask your GP for an ADHD referral
2. Request that the referral goes to Psychiatry-UK (or another RTC-approved provider) under your legal Right to Choose
3. Psychiatry-UK triages your referral and places you on their waiting list
4. You are assessed via video call at no cost
5. If diagnosed, medication titration is included

The catch: RTC waiting times are currently 6-12 months with Psychiatry-UK, and some areas report longer. Your GP cannot refuse a Right to Choose referral, but some are unfamiliar with the process. NHS England guidance confirms patients have this right under the NHS Constitution.

NHS direct pathway: how long is the wait?

If you go through the standard NHS route (referral to your local NHS mental health team), waiting times are significantly longer:

• England: 2-4 years in many areas, with some trusts reporting 5+ year waits
• Scotland: 1-3 years depending on health board
• Wales: 1-3 years, highly variable by region
• Northern Ireland: 2-4 years

These waits are the primary reason many adults choose to pay privately.

Red flags to avoid

Not all ADHD assessment services are equal. Watch out for:

• Unqualified assessors — diagnosis must be made by a psychiatrist, specialist doctor, or appropriately trained prescriber. A life coach or unregistered therapist cannot diagnose ADHD.
• Diagnosis guarantees — no legitimate service can guarantee a diagnosis before assessing you. If a provider implies everyone gets diagnosed, question their clinical rigour.
• No follow-up plan — a diagnosis without a treatment plan is incomplete. Your provider should discuss medication options, therapy, and shared care with your GP.
• Extremely short assessments — a thorough ADHD assessment takes 2-3 hours. A 20-minute screening is not a diagnostic assessment.
• No collateral history — best practice requires information from someone who knew you in childhood. Providers that skip this step may face challenges with shared care acceptance.

What happens after diagnosis?

Medication: Stimulant medications (methylphenidate, lisdexamfetamine) are first-line treatment for ADHD in adults. Your prescriber will titrate the dose over 3-6 months. Once stable, your GP may agree to take over prescribing under a shared care agreement.

Workplace adjustments: ADHD is a protected disability under the Equality Act 2010. You can request reasonable adjustments from your employer, such as flexible deadlines, noise-cancelling headphones, or written rather than verbal instructions.

DVLA notification: You must inform the DVLA if your ADHD affects your ability to drive safely. In most cases, you can continue driving, but the DVLA may request a medical report from your doctor.

Therapy: ADHD coaching and CBT adapted for ADHD can help with organisation, time management, and emotional regulation. These are often more effective alongside medication than either approach alone.

Is a private ADHD assessment worth it?

For many adults, yes. The NHS wait is measured in years, and untreated ADHD has a significant impact on work, relationships, and mental health. A private assessment costing £300-700 gets you a diagnosis in weeks rather than years, and allows you to start treatment promptly.

If cost is a barrier, the NHS Right to Choose route through Psychiatry-UK is the best option — it's free, though you will need to wait 6-12 months rather than the 2-5 years of the standard NHS pathway.