NHS Autism Waiting Lists in the UK: What Parents Need to Know in 2026
If you have asked your GP for an autism referral and been told to expect a long wait, you are far from alone. The NHS autism waiting list in England is at its highest recorded level, and families across the UK are struggling with delays that stretch into years rather than months. This guide explains the current situation, your options whilst you wait, and how to make sure your child still gets the support they need in the meantime.
How long are NHS autism waiting times in 2026?
As of mid-2025, there were more than 236,000 open referrals for autism assessment in England alone. Of those, over 90 per cent had been waiting longer than the 13 weeks recommended by NICE guidelines. In many areas, families are waiting two to four years from referral to assessment.
Waiting times vary considerably depending on where you live. Some NHS trusts and integrated care boards perform significantly better than others. As a general rule, urban areas with high demand and stretched CAMHS services tend to have the longest waits, but even rural areas are not immune.
Scotland, Wales and Northern Ireland run their own NHS services and face similar pressures. In Scotland, some health boards have waiting times of three years or more. In Wales, the all-Wales autism service has seen referral numbers increase dramatically over the past five years.
Why are waiting times so long?
The backlog has several causes. Referral rates have increased significantly as awareness of autism has grown — particularly around autistic girls and women, adults who were missed in childhood, and the overlap between autism and ADHD. At the same time, the specialist workforce — clinical psychologists, paediatricians, and speech and language therapists — has not grown at the same pace. The result is a system under enormous pressure.
NHS England has acknowledged the crisis and published a national framework for improving autism assessment pathways, but meaningful change is taking time to reach individual families.
What can I do while I wait?
The wait for an NHS assessment does not have to be a period of standing still. There is a great deal you can do in the meantime to support your child and to build the case for services.
Keep a detailed record
Start documenting what you observe at home and what school is reporting. Note specific examples of behaviour, communication, sensory responses, and anything that worries you. This log will be invaluable when the assessment eventually arrives — and it may help you identify patterns you had not previously noticed. See our guide on what to do while waiting for an autism assessment for a full set of practical suggestions.
Talk to your child’s school
A diagnosis is not required to access SEND support at school. If your child is struggling, ask the school’s SENCO (Special Educational Needs Coordinator) to put support in place under their SEN support duty. Schools are legally required to identify and support children with additional needs, regardless of whether a formal diagnosis is in place.
Ask school to contribute to the referral
If your referral is already in place, make sure the school knows and ask them to submit their observations to the NHS assessment team. In many trusts, schools can submit information directly — this strengthens the referral and may help move things forward.
Contact your local SENDIASS
Every area in England has a SEND Information, Advice and Support Service (SENDIASS). These are free, impartial services that can advise on your rights, help you navigate the system, and assist with EHCP applications. In Scotland, they are called IASS (Information, Advice and Support Services) and in Wales, SNAP Cymru provides similar support.
Can I go private whilst waiting for the NHS?
Yes. You are free to seek a private autism assessment at any point, regardless of where you are in the NHS queue. If your private assessment confirms an autism diagnosis, the NHS is expected to accept this and add it to your child’s records. You do not have to wait for the NHS assessment to conclude.
For families who can afford it, a private assessment typically takes four to eight weeks and costs between £1,500 and £3,500. Read our guide on how much a private autism assessment costs in the UK for a full breakdown of fees and what affects the price.
What is the NHS Right to Choose scheme?
If you are in England and your GP has referred your child to a consultant or specialist, you have the legal right to choose which NHS provider carries out the assessment — including a small number of independent providers approved to carry out NHS-funded assessments. This can sometimes reduce the wait significantly.
Read our full guide on how the NHS Right to Choose scheme works for autism assessment, including which providers you can request and how to make the request to your GP.
What if my GP will not refer at all?
Unfortunately, some GPs decline to refer for autism assessment — sometimes citing their own assessment that autism is unlikely, or pointing to extremely long local waiting times as a reason not to refer. This is frustrating and, in many cases, not appropriate. Read our guide on what to do if your GP refuses an autism referral for your options, including how to make a formal complaint and how to request the referral without GP involvement.
Whilst you wait: free resources and support
Several national organisations offer free support and resources for families awaiting assessment:
- The National Autistic Society (autism.org.uk) — helpline, online community, and detailed guidance on assessment and diagnosis
- SENDIASS — free local advice on education rights and EHCP applications
- Ambitious about Autism — school-focused support and resources for families
- Autistic UK — peer support run by autistic people
Find a private autism assessor near you
If you are considering going private while you wait for the NHS, The SEND List directory can help you find a specialist in your area:
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