Starting secondary school with autism: a guide for parents (2026)
The transition from primary to secondary school is one of the most significant challenges many autistic children face. A new building, multiple teachers, a complex
Autism is a lifelong condition — but for many adults, it was never identified in childhood. Whether you are in your twenties, forties, or beyond, recognising that you may be autistic and seeking an assessment is entirely valid and can be genuinely life-changing.
This guide covers everything about adult autism assessment in the UK: why adults seek a diagnosis, what the process involves, how much it costs, and what difference a diagnosis can make to your life.
The number of adults seeking autism assessments has grown dramatically in recent years. Several factors are driving this:
The core principles are the same — a structured assessment by a qualified clinician using validated tools, resulting in a diagnostic report. But there are important differences in how the process works for adults:
| Aspect | Child assessment | Adult assessment |
| Key tools | ADOS-2, ADI-R, school reports | ADOS-2 (Module 4), self-report measures, developmental history |
| Developmental history | Provided by parents | Self-reported, or with a parent/sibling if available |
| School input | SENCO questionnaire standard | School records sometimes requested, not always available |
| Focus | Current functioning and development | Lifelong history, current impact on work and relationships |
| Co-occurring conditions | ADHD, anxiety, sensory | ADHD, anxiety, depression, burnout, relationship difficulties |
If a parent or sibling is available to provide a developmental history, most assessors will request this. It helps to have someone who knew you in childhood available to answer questions, but it is not essential — many adults are assessed without any informant.
Adult assessments are typically slightly less expensive than comprehensive child assessments, though costs vary significantly by provider and location:
| Assessment type | Typical cost | Notes |
| Standard adult autism assessment | £600–£1,200 | Most common option — multi-clinician, ADOS-2, full report |
| Comprehensive adult assessment | £1,200–£1,800 | Includes additional measures, longer feedback, detailed report |
| Combined autism + ADHD assessment | £1,400–£2,200 | AuDHD assessment — increasingly available |
| London / South East premium | +20–30% | As with child assessments, location affects price |
NHS waiting times for adult autism assessment are, if anything, worse than for children. In many parts of England, Scotland, and Wales, adults are waiting four to seven years for an NHS autism assessment. Some areas have effectively closed their adult autism assessment services to new referrals.
To access NHS adult autism assessment, you typically need a GP referral to either a community mental health team or a specialist autism assessment service. Not all areas have dedicated adult autism assessment pathways — your GP may need to refer you to a service in a neighbouring area.
For a detailed breakdown of assessment routes, timelines, online vs in-person options, clinician requirements, and regional pathways, read how private autism assessment works across the UK.
For most adults who need an assessment in a reasonable timeframe, private assessment is the realistic route. The NHS pathway for adult autism is in many areas more broken than the children’s pathway — waits of five or more years are common.
Adults sometimes wonder whether a diagnosis will actually change anything. For many, it changes everything:
For many autistic adults, a diagnosis is the moment decades of confusion, self-blame, and feeling fundamentally different from others finally makes sense. Understanding that you are autistic — not lazy, not antisocial, not broken — is profound.
Under the Equality Act 2010, employers must make reasonable adjustments for disabled employees. Autism is a disability under the Act. A diagnosis gives you the legal standing to request adjustments — flexible working, a quieter workspace, written rather than verbal instructions, adjusted deadlines.
The government’s Access to Work scheme can fund practical workplace support for autistic adults — coaching, assistive technology, travel support. A diagnosis is required to apply.
PIP is the adult equivalent of DLA. Autistic adults who struggle with daily living or mobility may be eligible. A diagnosis and diagnostic report significantly strengthens a PIP application.
Autistic university students are entitled to support through the Disabled Students’ Allowance (DSA), which can fund note-takers, specialist software, and additional exam arrangements. A diagnosis is required to access DSA.
Understanding that you are autistic can transform your relationships. Many autistic adults find that a diagnosis helps them communicate their needs more clearly to partners and friends, reduces the exhaustion of masking, and connects them with a community of people who understand their experience.
Some adults find it helpful to complete an online self-report measure before seeking a formal assessment — the AQ-10 (a brief 10-question screening tool) is widely used and freely available online. A high score does not mean you are autistic, but it provides useful information to share with a GP or assessor.
Is it worth getting an autism diagnosis as an adult?
For most people, yes. The self-understanding alone is valuable. Added to that, a diagnosis can open access to workplace adjustments, PIP, DSA, and — perhaps most importantly — an explanation for why life has sometimes felt so much harder than it should.
I think I have ADHD as well as autism — can I be assessed for both at once?
Yes. Combined autism and ADHD assessments (sometimes called AuDHD assessments) are increasingly available from private providers. Ask specifically whether combined assessment is offered and ensure the assessor has experience with both conditions.
Will a diagnosis affect my employment?
You are not legally required to disclose an autism diagnosis to your employer. If you choose to disclose, your employer has a legal duty to consider and implement reasonable adjustments. Many autistic adults find that selective disclosure — sharing with a trusted manager or HR rather than broadly — gives them the benefits of workplace adjustments without the risks of stigma.
Can I be assessed privately if I am already waiting for an NHS assessment?
Yes. Private and NHS assessments are entirely separate. Going private does not affect your position on any NHS waiting list.
What if I was assessed as a child and told I was not autistic?
Assessment tools and knowledge of how autism presents — particularly in women and in people who mask — have improved significantly in recent decades. A previous negative assessment does not rule out autism. If you have ongoing concerns, a new assessment using current tools and criteria is entirely valid.
Written by AI Mum editorial team
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