ADHD & Autism Waiting Lists: Cost to Families

I want to start by telling you about a room.

A standard NHS consulting room. Cream walls. One desk. A small box of toys in the corner that nobody had offered him. My son was three years old, and for the best part of two hours I had to sit across from a professional and list everything my child couldn't do. Every struggle. Every gap. Every concern.

In front of him. He was three. And he understood every word.

I watched his face change — confusion becoming distress becoming a very particular kind of rage that comes from hearing yourself described as your deficits by someone who loves you, in a room you can't leave. He became dysregulated. And honestly? He was completely right to.

That room is where I really understood what a waiting list actually costs. Not in months. In moments. This week's episode of the podcast is about exactly that — you can listen here — but I wanted to write it down too, because I know a lot of you are googling this stuff at midnight.

How long are NHS waiting lists for autism and ADHD assessments right now?

The honest answer: longer than anyone will tell you at the point of referral.

As of June 2025, there were 236,225 people in England waiting for an autism assessment — and 89% of them had been waiting longer than the 13 weeks NICE recommends. The average wait is now over 17 months. In Birmingham, children are waiting at least 32 months. Some services are quoting four years.

ADHD is no better. As of December 2025 there were 562,450 open referrals for ADHD assessment in England, and nearly two-thirds of the children on that list had been waiting over a year. The NHS's own ADHD Taskforce says some areas have lists of ten to fifteen years. Years, not months.

And here's the one that stopped me: analysis of nine million UK GP records found only 0.32% had a recorded ADHD diagnosis — meaning roughly one in nine people with ADHD in the UK actually has the formal diagnosis. Eight out of nine are walking around without the right words for their own brain.

I'm not a clinician, and I'm not here to explain the policy. I'm here because my family has lived both versions of this system.

Three years vs six weeks: two children, two doors

My middle son has been in the NHS system for over three years. Three years of over-explaining to every new teacher and every new professional. He has ADHD, he's autistic, he has sensory processing differences, he has a PDA profile — and without the official piece of paper, I'm constantly justifying. Not advocating for what he's entitled to. Advocating for the basic courtesy of being understood.

We're still waiting. Still. For the official diagnosis, for the EHCP recommendations. The most useful thing we've ever learned about parenting him — the PDA profile — took three years to arrive.

My eldest went a different way. After that room, I couldn't put him through the same process, and we were fortunate — my work covered a private assessment. Questionnaires at home first. Within ten or fifteen minutes of the appointment itself, his autism was confirmed. And then something I hadn't anticipated: a proper family conversation, with him in it, about what autism means and doesn't mean. He heard himself described not as a list of deficits but as a person whose brain works a particular way.

That's what six weeks bought us instead of three years. Not a better assessment because it was private — a better one because it had time, and it was designed around the child in the room. I sit with the guilt of that difference most weeks, if I'm honest. One of my boys got the kind version. The other is still waiting.

Can you request an EHCP without a diagnosis?

Yes. And I cannot say this loudly enough, because nobody told us for far too long.

The legal right to request an Education, Health and Care Plan assessment does not depend on a diagnosis. It depends on need. If your child is struggling, you can write to your local authority's SEND team today and request a needs assessment under Section 36 of the Children and Families Act 2014 — and they must respond within six weeks. IPSEA has a free model letter. Use it.

(You may also have seen scary headlines about EHCPs being reformed. The proposals are real, but as of this month there's no actual Bill before Parliament — so please don't let a headline stop you exercising a right that exists right now.)

What is Right to Choose — and is it still available?

If your NHS wait exceeds 18 weeks, Right to Choose can let you access an NHS-funded assessment with a different provider — still free, still NHS, usually a much shorter queue. It starts with your GP.

But — and this matters — some areas have started pausing or restricting it when funding runs out, so check ADHD UK's Right to Choose page for the current picture where you live before you ask for the referral.

One more thing while I've got you, because it's time-limited: the government's call for evidence feeding the new autism strategy — including whether it should cover ADHD too — closes at 11:59pm on 10 July 2026. If you've lived any of this, your experience counts as evidence. That's this week. Have your say.

If you're in the waiting right now

I'm not speaking to you from the other side of this. I'm speaking from the middle — we're probably six months from the end of our current road, and there'll be another road after that. There always is.

The waiting is hard. The not-knowing is hard. The 3am guilt — about what you did and didn't push for, what you could and couldn't afford — is real and heavy and doesn't listen to reason. But you were doing the best you could with what you had, and what you had was not enough information and not enough support. That's the system's failure, not yours.

And if you're carrying more than you can hold today, I made a small free thing for exactly that: the Two-Circle Reset — a five-minute way to put something down. It's free, and it's the first link in my bio everywhere.

The full episode goes deeper — the room, the guilt, the tiny things that keep me going (my eldest picks up other people's dropped bottles on forest walks; he doesn't ask for credit, he just wants to make things right). Listen wherever you get your podcasts.

And tell me — what do you wish someone had told you, about yourself or your child, before you had to figure it out the hard way?

You're not alone. I'll see you in the next one. — Claire

Not medical or legal advice — Claire speaks as a peer with lived experience. For casework help see IPSEA, the National Autistic Society and ADHD UK. Stats: NHS Digital (June 2025), NHS England Digital (Dec 2025), NHS England Independent ADHD Taskforce (2025), Priory GP-records analysis (2025).