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© 2026. The Purpl Co Limited. All rights reserved.
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© 2026. The Purpl Co Limited. All rights reserved.
18 min read
Written by
Georgina, Founder of Purpl
Published on
June 13, 2026
Last reviewed: 13 June 2026
Applies to: UK
Written by: Georgina, Founder of Purpl
Autism and ADHD waiting lists in the UK can be long, and in some areas people are waiting months or years for an assessment. The latest NHS autism statistics show hundreds of thousands of people in England are still waiting on the autism diagnostic pathway, while NHS England’s ADHD Taskforce has warned that ADHD waits can stretch beyond two years in many areas, and much longer in some places.
The hardest part for many people is not just the wait itself. It is trying to keep going at school, work, university, home and in daily life without the clarity, adjustments or support they need.
If you are waiting for an autism assessment, an ADHD assessment, or both, you are not alone. You also do not always need a diagnosis before asking for help. Schools, employers, colleges, universities and health services should look at your needs, not just a formal label.
This guide explains what is happening with autism and ADHD waiting lists now, why delays matter, and what practical support may be available while you wait.
At Purpl, we know that disability and long-term health conditions often come with extra costs, extra admin and extra emotional strain. That includes the cost of private assessments, missed work, travel to appointments, therapy, coaching, sensory tools, assistive technology, tutoring, childcare and everyday things that help life feel more manageable. You can also use the Purpl Disability Benefits Guide and Purpl Handbook to explore wider support, money-saving help and benefits guidance alongside this article.
Autism and ADHD waiting lists matter because diagnosis is often the gateway to understanding, confidence, treatment, education support, workplace adjustments and family support. For many people, the wait affects much more than a medical file. It can affect school attendance, behaviour policies, exam support, employment, relationships, finances, mental health and self-esteem.
For autism assessments, NHS guidance confirms that a GP can often refer children and adults to a local autism team, although children may need a referral through school or a health visitor. The NHS also recognises that accepted referrals can take a few months or longer (https://www.nhs.uk/conditions/autism/assessments/).
For ADHD, the national picture is deeply worrying. NHS England’s plain English summary of the ADHD Taskforce report highlights long waits, poor access to support and serious risks when people cannot get timely help. It says some people wait more than two years for an ADHD assessment, while some areas have reported waits of 10 to 15 years (https://www.england.nhs.uk/long-read/plain-english-summary-of-the-adhd-taskforce-report/).
This is why the phrase “just waiting for a diagnosis” can feel so dismissive. People are not waiting in a neutral space. They may already be struggling with executive function, sensory overload, communication differences, burnout, emotional regulation, demand avoidance, sleep, anxiety, school refusal, job instability or the constant feeling that life takes more effort than it seems to take for everyone else.
Purpl Insight: A waiting list is not just a queue. For many disabled and neurodivergent people, it is months or years of extra emotional labour, extra admin and extra cost before the right support even starts.
Autism waiting times vary across the UK, and the most accurate answer depends on your local NHS area, age group and referral pathway. In England, NHS England publishes autism diagnostic pathway waiting time statistics by sub-ICB area, provider, age group, gender and ethnicity.
The latest official autism statistics, published on 14 May 2026, cover April 2025 to March 2026. In March 2026, there were 270,701 patients with an open referral for suspected autism in England. Of these, 242,708 people, or 89.7%, had been waiting at least 13 weeks (https://digital.nhs.uk/data-and-information/publications/statistical/autism-statistics/april-2025-to-march-2026).
That 13-week figure matters because NHS autism statistics use it as a key marker for whether someone has waited beyond the recommended timeframe. It does not mean everyone gets an assessment after 13 weeks. In reality, many people wait much longer, especially in areas with high demand, limited clinical capacity or separate pathways for children and adults.
For families, this can mean a child waits through whole school years before getting answers. For adults, it can mean going through work changes, relationship breakdowns, burnout, parenthood, menopause, long Covid or other life transitions before anyone joins the dots.
Purpl Tip: Ask the service that accepted your referral whether they can give you a realistic local waiting time, what happens if your circumstances worsen, and whether they offer any pre-diagnostic support, workshops or signposting while you wait.
ADHD waiting times are harder to summarise nationally because data collection has historically been poor and local pathways differ. NHS England has started publishing national-level management information on ADHD, with quarterly reporting beginning in May 2025, as part of its ADHD Improvement Programme (https://www.england.nhs.uk/mental-health/adhd/).
The ADHD Taskforce has made clear that waits are a major issue. Its plain English summary says some people wait more than two years for an ADHD assessment, and in some areas waiting times have grown to 10 to 15 years (https://www.england.nhs.uk/long-read/plain-english-summary-of-the-adhd-taskforce-report/).
For children and young people, Parliament’s Health and Social Care Committee wrote to the Department of Health and Social Care in 2025 after examining autism and ADHD diagnostic pathways. The Committee cited NHS England statistics showing that, as of March 2025, up to 316,000 children were waiting for an ADHD assessment, with up to 85,000 waiting between 52 and 104 weeks after referral (https://committees.parliament.uk/publications/48963/documents/257149/default/).
Adults can face a different but equally difficult problem. Many adult ADHD services were not designed for the current level of demand, and some people only seek assessment after years of masking, job changes, mental health treatment, parenting struggles or finally recognising ADHD traits in themselves after a child’s diagnosis.
Purpl Insight: ADHD waiting lists are not just about attention or concentration. Delayed support can affect debt, missed deadlines, employment, education, relationships, emotional wellbeing and the confidence to ask for help.
More adults are being diagnosed with autism and ADHD for several reasons. Awareness has grown, especially around how autism and ADHD can look in women, girls and people who have spent years masking. Social media has also helped some people recognise patterns in themselves, although it should never replace a proper assessment.
Adult life can make neurodivergent traits more visible. Workload, parenting, caring responsibilities, menopause, chronic illness, bereavement, long Covid or burnout can remove the coping systems someone used for years. Acas workplace guidance notes that someone can be diagnosed at any stage of life, and that experiences such as menopause or long Covid can make neurodivergent traits more obvious (https://www.acas.org.uk/reasonable-adjustments/adjustments-for-neurodiversity).
There is also growing recognition that many people were missed as children because they did well academically, behaved quietly, copied others, hid distress, or had their needs described as anxiety, laziness, sensitivity, anger, poor organisation or “not trying hard enough”.
This does not mean autism or ADHD are “trends”. It means more people are finally finding language for lifelong experiences. For many Purpl members, diagnosis or self-recognition can bring grief and relief at the same time. Relief because things finally make sense. Grief because earlier support might have changed school, work, relationships or mental health.
Purpl Tip: While you wait, write down examples from childhood and adulthood. Assessments often look at lifelong patterns, so notes about school reports, friendships, sensory needs, routines, impulsivity, time management, meltdowns, shutdowns or burnout can help later.
Yes, in many situations you can ask for support before you have a formal autism or ADHD diagnosis. This is one of the most important points for people stuck on long waiting lists.
You do not need an official medical letter to start a conversation about workplace support. Acas explicitly states that employers should offer support for neurodivergent workers whether or not someone has a diagnosis, and that a worker does not need a diagnosis to be considered disabled under the Equality Act 2010 (https://www.acas.org.uk/reasonable-adjustments/adjustments-for-neurodiversity).
In education, support should focus on need, not just a diagnosis label. The SEND Code of Practice covers support for children and young people aged 0 to 25 with special educational needs and disabilities (https://www.gov.uk/government/publications/send-code-of-practice-0-to-25). In practice, this means families can ask schools to look at the child’s difficulties now, rather than waiting years for a diagnostic report.
Support before diagnosis might include:
A diagnosis can still be very important, especially for ADHD medication, specialist reports, self-understanding and some formal support routes. But lack of diagnosis should not mean no help at all.
Purpl Insight: You do not need to wait until you are completely burnt out before asking for adjustments. A good support plan should reduce harm, not simply respond once harm has already happened.
If your child is waiting for an autism or ADHD assessment, start by asking the school what support they can put in place now. You can ask for a meeting with the SENCO, pastoral lead, class teacher or head of year and explain what you are seeing at home and school.
Useful things to ask about include:
The Children’s Commissioner has argued that children with neurodevelopmental conditions should receive support when their additional needs show up, in homes, schools and communities, rather than being left unsupported until a diagnosis arrives (https://www.childrenscommissioner.gov.uk/resource/waiting-times-for-assessment-and-support-for-autism-adhd-and-other-neurodevelopmental-conditions/).
It can help to keep everything in writing. After meetings, send a short email confirming what was agreed. If the school says support cannot happen without a diagnosis, ask them to put that in writing and ask what needs-based support they can offer under SEND guidance.
Purpl Tip: Keep a simple folder with school emails, behaviour logs, attendance concerns, homework issues, sensory triggers, sleep impact and examples of what helps. This can support school meetings, referrals and future assessment appointments.
You can ask for workplace adjustments while waiting for an autism or ADHD assessment. The law focuses on how your condition affects you, not whether you have a neat piece of paper ready to show your manager. For neurodivergent workers, Acas makes this particularly clear: employers should look at the actual workplace barriers someone faces, label or no label (https://www.acas.org.uk/reasonable-adjustments/adjustments-for-neurodiversity).
Workplace adjustments for autism or ADHD might include:
You may also be able to apply for Access to Work if you have a disability or health condition that affects your work. Access to Work can provide advice and may offer a grant towards support, depending on eligibility and circumstances (https://www.gov.uk/access-to-work). A formal diagnosis is not always required, but you will need to give clear evidence of your functional barriers at work. In practice, this means explaining how suspected autism, ADHD or another health condition affects your job, such as focus, communication, sensory overload, travel, organisation, fatigue, meetings or task switching. The DWP may also use an occupational assessment or ask for detailed self-reported evidence to understand what support you need.
Try to frame adjustments around what helps you do your job well. For example, instead of saying “I can’t cope with meetings,” you might say, “I work better when I have an agenda beforehand and written action points afterwards, because it helps me process information and prioritise tasks.”
Purpl Insight: The best workplace adjustments often look small from the outside, but they can be the difference between staying employed and quietly burning out.
If you are at university or college, contact student support, disability services or wellbeing services as early as you can. You do not have to wait until everything falls apart.
Disabled Students’ Allowance, often called DSA, can help higher education students with extra study-related costs because of a disability, long-term health condition, mental health condition or specific learning difficulty. DSA is separate from household income and can help with disability-related study support, depending on eligibility and need (https://www.gov.uk/disabled-students-allowance-dsa).
For the 2026 to 2027 academic year, the Student Loans Company has published updated DSA application forms, evidence forms and guidance notes for students in England (https://www.gov.uk/government/publications/disabled-students-allowance-application-forms-and-notes-for-2026-to-2027). The practical point for autistic and ADHD students is simple: do not leave DSA until the first few weeks of term if you can avoid it.
The DSA process can take time. Student Finance England’s practitioner guidance says DSA applications can take around 14 weeks to process, and students will not receive their DSA unless they attend a needs assessment (https://www.practitioners.slc.co.uk/products/full-time-undergraduate-education/full-time-disabled-student-allowance/application-process/). Even when current processing updates look shorter, autumn is a busy period and support still has to be assessed, approved and arranged.
This matters even more if you need non-medical help, such as specialist mentoring, study skills support, assistive technology training or practical support. Universities and colleges also have their own legal duty to make reasonable adjustments for disabled students, and DSA funding should not be treated as the limit of what a higher education provider can do (https://www.practitioners.slc.co.uk/media/2124/dsa-guidance-chapter-i.pdf).
If you are starting university in 2026 or 2027, try to speak to the disability team before arrival. Ask what they can put in place while DSA is still being processed, especially if you are waiting for an autism or ADHD diagnosis or still gathering evidence. During the autumn rush, an 8-week delay can wipe out a large part of the first term, so it is worth planning as if support may take several weeks to arrange rather than assuming it will be ready immediately.
Depending on your circumstances, support may include:
Some universities may ask for evidence, but this does not always have to be a formal autism or ADHD diagnosis. Evidence might include a GP letter, referral letter, previous support plan, school evidence, mental health evidence or a needs assessment. Each provider can have its own process, so ask what they accept while you wait.
Purpl Tip: Contact disability support before the term gets intense. Ask them what they can arrange now, what depends on DSA, and what evidence they will accept while you wait for assessment or diagnosis.
In England, some people can use NHS Right to Choose to ask for a different provider for their autism or ADHD assessment.
For autism, people in England can choose which mental healthcare service carries out an assessment, and may be able to find a clinic with a shorter waiting time (https://www.nhs.uk/conditions/autism/assessments/).
For ADHD, Right to Choose can be helpful, but it is not always simple, especially when medication comes into the picture. ADHD UK has practical guidance on Right to Choose in England, including provider choice, referral routes and waiting time issues (https://adhduk.co.uk/right-to-choose/).
Be aware that in 2026, some local Integrated Care Boards, known as ICBs, have tightened rules or changed local approaches around ADHD shared care. This means some GPs are increasingly rejecting shared care agreements for ADHD medication titration or ongoing prescribing from alternative providers.
Pulse Today reported in 2025 that an ICB had redirected ADHD prescribing after nearly 50 practices in one area withdrew from shared care agreements, with practices raising concerns about workload, safety and prescribing responsibility (https://www.pulsetoday.co.uk/news/clinical-areas/mental-health-pain-and-addiction/icb-redirects-adhd-shared-care-prescribing-following-gp-collective-action/).
This matters because a Right to Choose or private diagnosis may not always lead smoothly into NHS prescribing, even when the assessment itself was NHS-funded or clinically valid. Before asking your GP for a referral, check:
Private assessment is another option for some people, but it can be expensive and does not always guarantee NHS medication support afterwards.
For ADHD especially, ask about prescribing, titration, physical health checks, shared care, follow-up costs and what happens if your GP or local ICB will not accept a shared care agreement. This is especially important because some people are now finding themselves stuck between private diagnosis, Right to Choose providers, NHS waiting lists and local prescribing rules.
Purpl Insight: Shorter assessment waits can help, but the safest route is one where you understand the whole pathway, including what happens after the report arrives.
Waiting can feel powerless, but there are practical steps that can help you stay organised and strengthen your case for support.
Start with your paperwork. Keep a note of:
You can also prepare for the assessment itself. For autism, the National Autistic Society has guidance on what you can do while waiting, including preparing information and finding support during the wait (https://www.autism.org.uk/advice-and-guidance/diagnosis/assessment-and-diagnosis/what-can-i-do-while-waiting-for-an-autism-assessme).
For ADHD, it can help to gather examples across different areas of life. This might include losing things, missed deadlines, emotional impulsivity, restlessness, sleep issues, money management, time blindness, unfinished tasks, rejection sensitivity, difficulty starting work or periods of intense hyperfocus.
You can also look at practical support now:
Purpl Tip: Create a one-page “what helps me” document. Include triggers, strengths, communication preferences, sensory needs, routines and support that works. You can use it for school, work, appointments or family conversations.
Long waits can have a serious impact on mental health. Feeling dismissed, misunderstood or unsupported can increase anxiety, depression, burnout, isolation and crisis risk.
If you feel unsafe, at risk of harming yourself, or unable to cope, seek urgent help. You can contact NHS 111, ask for an urgent GP appointment, contact your local crisis team if you have one, go to A&E in an emergency, or call 999 if there is immediate danger.
For non-emergency support, speak to your GP and explain the impact of the waiting list on your mental health, not just the fact that you are waiting. Be specific. For example:
If your child is struggling, ask school what emotional support they can provide now and whether they can refer to local services. NHS England has said the Partnership for Inclusion of Neurodiversity in Schools programme is helping teachers better identify and support neurodivergent pupils and work with families, while Mental Health Support Teams continue to expand in schools (https://www.england.nhs.uk/2025/11/nhs-england-responds-to-adhd-taskforce-final-report/).
Purpl Insight: You are not “making a fuss” if you ask for help while waiting. The wait itself can be harmful, and services need to know when your situation is getting worse.
Autism assessment waiting times vary by area, age and service. In England, the latest NHS Digital autism statistics show that, in March 2026, there were 270,701 patients with an open referral for suspected autism. Of these, 242,708 people, or 89.7%, had been waiting at least 13 weeks.
ADHD waiting times vary widely across the UK. NHS England’s ADHD Taskforce has said some people wait more than two years for an ADHD assessment, and in some areas waits have grown to 10 to 15 years. Local waiting times can change, so ask your GP, local NHS service or provider for the most current estimate.
Yes. NHS guidance says a GP or education professional can tell you what support is available while you are waiting for an autism assessment or if you cannot get a referral. You can also ask school, work, college or university for needs-based adjustments.
Yes. You can ask for support based on the difficulties you are experiencing, even without a formal diagnosis. At work, Acas says employers should offer support for neurodivergent workers whether or not they have a diagnosis. In education, support should focus on need, not only labels.
Yes. Schools should look at your child’s needs and difficulties, not only whether they have a formal diagnosis. Ask the SENCO for a meeting and request support in writing, especially if your child is struggling with learning, attendance, behaviour, sensory needs, emotional regulation or transitions.
Yes. Adults can be assessed and diagnosed with autism or ADHD. Many people reach adulthood without a diagnosis because they masked, coped quietly, were misunderstood, or had their difficulties explained as anxiety, stress, behaviour, laziness or personality.
Right to Choose is available in England and may allow some NHS patients to choose a different provider for an autism or ADHD assessment. It does not apply in the same way in Wales, Scotland or Northern Ireland. For ADHD, check what happens after diagnosis, including titration, prescribing and shared care, because some local Integrated Care Boards and GP practices have tightened rules or refused shared care agreements.
Yes, it can happen. Shared care agreements are not automatic, and some GPs or local Integrated Care Boards may refuse shared care for ADHD medication if they have concerns about local policy, monitoring, prescribing responsibility, provider standards or capacity. Before choosing a provider, ask what happens after diagnosis, who manages titration, who prescribes medication, and whether your GP practice usually accepts shared care from that provider.
You may be able to apply for Disabled Students’ Allowance if you have evidence of a disability, long-term health condition, mental health condition or specific learning difficulty that affects your study. A formal autism or ADHD diagnosis can help, but universities may also accept other evidence for some support while you wait, such as GP letters, referral letters, previous support plans or mental health evidence. Ask your disability team what they can put in place before DSA is fully approved.
Timescales can vary depending on the time of year, your evidence, the needs assessment process and how quickly support is approved and arranged. Student Finance England’s practitioner guidance says DSA applications can take around 14 weeks to process, and students will not receive DSA unless they attend their needs assessment. Because autumn can be a busy period, it is sensible to contact your university disability team as early as possible.
Private assessment can reduce waiting time for some people, but it can be expensive and may not always lead to NHS follow-up support, especially for ADHD medication. Before paying, ask about clinician qualifications, assessment standards, reports, medication, titration, shared care and future costs.
Yes. Acas guidance says a worker does not need a diagnosis to be considered disabled under the Equality Act 2010, and employers should consider support whether or not someone has a diagnosis for their neurodivergence.
Autism or ADHD can count as a disability if it has a substantial and long-term negative effect on your ability to carry out normal day-to-day activities. Some neurodivergent people do not identify as disabled, but they may still have legal protection or be entitled to support depending on how their condition affects them.
Autism and ADHD waiting lists remain a major issue across the UK. Some people wait months, others wait years, and the impact can reach every part of life, including school, work, money, relationships, mental health and self-confidence.
The most important thing to remember is that you do not always need a diagnosis before asking for help. Schools, employers, colleges and universities should look at what you or your child need now. A formal diagnosis can still matter, especially for understanding, ADHD medication, specialist reports and long-term support, but it should not be the only route to compassion, adjustments or practical help.
While you wait, keep records, ask for support in writing, prepare for your assessment and check whether routes such as Right to Choose, Access to Work, SEN support or Disabled Students’ Allowance apply to your situation.
For ADHD in particular, check the whole pathway before choosing a provider. A faster assessment may help, but shared care, titration, prescribing and local Integrated Care Board rules can affect what happens after diagnosis.
For students, early planning matters. DSA can be incredibly helpful, but support can take time to process, assess and arrange. Speak to your university or college disability team before term starts where possible, especially if you need mentoring, study skills support, assistive technology or accommodation adjustments.
At Purpl, we know how exhausting it can be to fight for answers while also managing the extra costs of being disabled or neurodivergent. You deserve support that starts before crisis point.
Georgina is the Founder of Purpl, a UK platform created to help disabled people, people with long-term health conditions and their families save money and access practical support. Georgina has ADHD and MS, and although she does not have a formal autism diagnosis, her psychiatrist believes she may also be autistic. She writes from lived experience of disability, neurodivergence and long-term health conditions, and understands how exhausting it can be to manage health, work, benefits, family life and the extra costs that come with needing support.
Purpl’s mission is to make life more affordable for disabled people and to help the disabled community feel seen, valued and supported.
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