How Long Are NHS Waiting Lists for Children's Assessments?

If you have landed on this page, you are probably somewhere in the hardest part of parenting: the bit where you know something is going on with your child, you have finally asked for help, and now you are being told to wait. The first question almost every parent asks me is the same one. How long?

I want to give you an honest answer, not a comforting one, because false reassurance helps no one. Here is what the waits actually look like, why they are so long, and what you can do in the meantime.

The short, honest answer

For most children's developmental assessments on the NHS, you should expect to wait many months, and often more than a year. Some families are seen within a few months. Many wait two years or more. Where you live makes an enormous difference, which is why parents so often describe it as a postcode lottery.

ADHD and autism: the longest waits

Neurodevelopmental assessments are where the queues are worst. Across much of the UK, waits for an autism assessment commonly run from 18 months to three years, and in some areas considerably longer. ADHD assessments sit in a similar place. A handful of services have grown so stretched that they have paused new referrals altogether.

The reason these two stand out is simple: referrals have risen sharply over the last decade, while the number of clinicians qualified to diagnose has not kept pace. The gap between the two is the wait.

Speech, language and other assessments

Speech and language therapy, occupational therapy and general paediatric assessments tend to move a little faster, but "faster" is relative. A first speech and language appointment might come through in a few months; ongoing therapy blocks then have their own waits in between. Occupational therapy for sensory or motor needs varies widely by area.

Why the waits are so long

It helps to understand that the delay is usually not your GP being slow or your referral being lost, though both can happen. The wait is structural. Demand has climbed, awareness has grown, and the specialist workforce is finite. When more children need assessing than there are clinicians to assess them, a queue forms, and that queue only grows.

None of this is your child's fault, and none of it is yours. But knowing the cause does not shorten the wait, and that is the frustrating part.

What the wait actually feels like

Parents rarely talk about the wait as a line on a spreadsheet. They talk about the school asking for a diagnosis before they will put support in place. They talk about a child who is struggling now, this term, not in two years. They talk about lying awake wondering whether they are overreacting or under-reacting. If that is you, you are not being dramatic. You are being a parent.

What you can do while you wait

Being on a waiting list does not mean doing nothing. A few things genuinely help:

Keep a simple diary. Note what you see, when, and in what situations. This is gold dust for any future assessment.
Ask the school for support now. A child does not need a diagnosis to receive help under the SEND Code of Practice. Support should be needs-led, not label-led.
Check whether you qualify for NHS Right to Choose. In England, this legal right can let you choose a different qualified provider, sometimes with a shorter wait. We explain it fully in our guide to what NHS Right to Choose covers.
Get answers sooner if you can. Many families stay on the NHS list while seeing someone privately or online for advice in the meantime.

You do not have to only wait

This is the part I most want parents to hear. Joining the NHS list and getting help now are not mutually exclusive. You can do both. The list keeps your place for a full NHS assessment; getting support elsewhere means your child is not left without help for the months or years in between.

If you are weighing up whether to keep waiting, use Right to Choose, go private, or try something online, it is worth seeing the routes side by side. We have built a calm, plain-English comparison of every way to access support — by wait time, cost, remote access and hassle — so you can decide what is right for your family without any sales pitch.

The bottom line

NHS waiting lists for children's assessments are long, and for ADHD and autism they can be very long indeed. That is not a reason to give up on the NHS route, which is thorough and free. But it is a good reason to know your other options, to put support in place now rather than later, and to be kind to yourself while you wait. You asked for help. That was the hardest step, and you have already taken it.

How Long Are NHS Waiting Lists for Children's Assessments?