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Route one: standard NHS referral
Book a GP appointment, describe how the pattern has affected more than one part of life, and ask what the local adult or child referral route requires. Bring a one-page timeline with childhood examples, current examples and the practical impact; a screening questionnaire can support the conversation but cannot diagnose ADHD.
There is no honest national waiting-time figure. Local services and criteria differ and change, so ask your GP which service receives the referral and check that service's current information. Support for sleep, mood, work or school does not need to wait for an ADHD decision.
02
Route two: Right to Choose (England only)
In England, eligible first outpatient referrals may use NHS Right to Choose. Your GP makes the NHS-funded referral to an eligible provider you choose; the route does not apply in Scotland, Wales or Northern Ireland.
Ask the provider for its current referral requirements, give those details to your GP, and ask the practice to confirm when the referral is sent. Provider status and waits change, so check them at the source rather than relying on an old comparison table.
03
Route three: private assessment
A private route usually allows self-referral and means paying for the assessment. Before booking, establish who assesses you, whether a written diagnostic report is included, and what separate charges may follow for medication appointments, prescriptions and reviews.
A private diagnosis does not guarantee NHS prescribing. If medication may be relevant, ask the provider how ongoing review works and ask your GP practice how it approaches shared-care requests before paying.
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What the assessment involves
A qualified professional takes a developmental and clinical history, asks about symptoms and impairment in different settings, considers coexisting conditions and other explanations, and may use a structured diagnostic interview. A questionnaire is one input, not the assessment itself.
School reports and information from someone who knew you in childhood can help demonstrate early patterns. If they are unavailable, tell the service before the appointment and ask what other evidence it accepts rather than assuming the assessment cannot proceed.
05
Which route fits your situation
All three routes can end in the same thing: an assessment by a qualified professional and, where appropriate, a discussion about treatment. What differs is who pays, who chooses the provider, and how straightforward the medication and review arrangements are afterwards.
Where you live decides what is available. Right to Choose applies to eligible NHS referrals in England only; in Scotland, Wales and Northern Ireland the choice is between the local NHS route and paying privately. That is a fact about the route, not a judgement about which is better.
The practical question worth answering before you commit is not “which is fastest” — nobody can tell you that honestly — but “what happens after the diagnosis”. If medication may be relevant, ask each option how prescribing and reviews work, and ask your own GP practice how it handles shared-care requests. Our reading of the pathway, not a rule: this single question separates a route that ends well from one that leaves you paying indefinitely for reviews.
You do not have to pick one and abandon the others. Asking your GP about a local referral costs nothing while you look into the alternatives, and support for sleep, mood, work or school does not depend on the ADHD decision at all.