Autism & ADHD assessments: your routes
Worried about your child, waiting lists getting you down? There are three routes to an assessment in the UK: the NHS via your GP, NHS Right to Choose in England, and private providers. Here's how each works, plus links to reputable private assessors.
Route 1 — The NHS (GP referral)
- Talk to your GP. Share your concerns with examples of what you've noticed. In England, ask about Right to Choose at this point — your GP should offer it (see below).
- Referral. Your GP refers your child to the local NHS service — usually a community paediatric team (often best for younger children) or CAMHS (Child and Adolescent Mental Health Services) for older children and for ADHD.
- Assessment. A specialist team (paediatrician, psychiatrist, psychologist or specialist nurse) gathers information from you, school and other professionals, and observes or assesses your child. This may involve multiple appointments.
- Feedback & report. You'll be told the outcome and given a report. The NHS route is free, and an NHS diagnosis is usually accepted everywhere.
The waiting list reality
NHS assessment waiting times vary hugely by area — from months to 2+ years in some regions. If you're waiting, ask your GP whether your local service can tell you the current wait, and consider Right to Choose (below) or the private route. While you wait, ask the school for SEN support — you don't need a diagnosis to get support.
Route 2 — NHS Right to Choose (England)
In England, you have a legal right to choose which NHS provider carries out your child's first outpatient appointment — including autism and ADHD assessments. That means you can ask your GP to refer your child to an alternative provider (like the ones below that offer Right to Choose) with shorter waiting lists, free of charge.
- Ask your GP: "I'd like to use my Right to Choose — please refer my child to [provider]."
- Providers such as Psychiatry-UK, ADHD 360 and Clinical Partners are commissioned to deliver NHS assessments this way.
- Right to Choose applies to England only — Wales, Scotland and Northern Ireland have different arrangements.
Route 3 — Private assessment providers
Paying privately means faster assessments, your choice of clinician, and often a more detailed report. The downsides: cost (typically £1,000–£3,000+), and no guarantee that the NHS, school or local authority will accept the diagnosis automatically — though a good report is strong evidence for school support and an EHCP. Prices below were checked August 2026 — always confirm current fees and whether assessment is online or in person.
Psychiatry-UK psychiatry-uk.com
One of the largest UK providers of ADHD and autism assessments (children and adults), mostly online. Offers both NHS Right to Choose and private assessments, plus treatment and titration.
ADHD 360 adhd-360.com
The UK's largest specialist ADHD clinic — assessments, diagnosis and treatment for children and adults. Offers NHS Right to Choose and private care (assessment from around £950, with combined assessment-and-treatment packages).
Clinical Partners clinical-partners.co.uk
Private autism and ADHD assessments for children (autism from around £2,250), with clinics across the UK. Also delivers NHS Right to Choose autism assessments for children aged 5+.
National Autistic Society Diagnostic Service autism.org.uk/what-we-do/diagnostic-service
Charity-run, specialist autism diagnostic assessments in several UK cities. Fees typically £1,800–£3,800 depending on needs. A portion of income supports NAS services.
Berkeley Psychiatrists berkeleypsychiatrists.co.uk
CQC-registered private practice in London (Berkeley Square) offering ADHD and autism assessments for children and adults, in person or online — ADHD assessment around £1,425. Also commissioned for NHS Right to Choose adult ADHD.
Bloom Clinical bloomclinical.co.uk
Specialist autism and ADHD assessments, online and in person. Child autism assessment around £2,125; combined autism + ADHD assessments also available.
Acorn Autism acorn-autism.co.uk
Autism assessments for children and adults at around £2,150, including initial consultation, full assessment, report, feedback and recommendations.
Provide Wellbeing providewellbeing.co.uk
Neurodevelopmental service offering private autism (£1,900) and ADHD (£1,200, ages 6+) assessments, plus Right to Choose options for autism/ADHD in some areas.
Diverse Diagnostics diversediagnostics.co.uk
Autism (ASD) assessments at around £2,200 — multidisciplinary, online or in person, with a report you can share with school and professionals.
The Owl Centre theowl.org
Multi-disciplinary children's therapy service offering online autism and ADHD assessments for children and young people aged 7–17 via NHS Right to Choose, as well as private assessments.
Questions to ask any provider before you pay
- Are the clinicians GMC-registered (consultant psychiatrist/paediatrician) or HCPC-registered (psychologist)?
- Does the assessment follow NICE guidelines and involve a multi-disciplinary team?
- Is the age range right for your child, and is it online or in person?
- What's included — observation, school questionnaires, parent sessions, a written report, feedback session?
- Do you offer post-diagnostic support or signposting?
- Can you arrange shared care with the NHS for any medication (a GP may agree to prescribe after a private diagnosis, but some practices won't)?
After a private diagnosis
- Share the report with the school's SENCO — a good diagnostic report can unlock SEN support quickly, even without an EHCP.
- A private diagnosis doesn't guarantee an EHCP, but the local authority must consider it as evidence in an EHC needs assessment.
- Talk to your GP about shared-care arrangements for any prescribed medication — the NHS isn't obliged to take over private prescriptions.
Help and support lines
National Autistic Society helpline: 0808 800 4104 · ADHD UK · Contact: 0808 808 3555 · IPSEA (SEND law).
Choose providers carefully
Assessment is a significant decision and a significant cost. Stick to GMC/HCPC-registered clinicians working to NICE guidelines, check reviews, and ask exactly what you're paying for. We link to providers as a starting point, not an endorsement — please do your own checks.