Private assessments explained

What is a private assessment?

A private ADHD or autism assessment is a structured evaluation carried out by a qualified clinician outside the NHS, usually paid for directly by the person being assessed or their family. Private clinics can often offer more choice over timing and clinician, but the underlying clinical process should be broadly similar to NHS practice, following recognised frameworks such as NICE guideline NG87 for ADHD and NICE guidance for autism (CG142/CG128).

It's important to understand that "private" refers to how the assessment is funded and organised, not a different or lesser standard of care. A well-run private service should follow the same evidence-based principles as the NHS, use validated tools, and involve appropriately qualified professionals.

Who carries out these assessments?

Assessments should be led by clinicians with relevant training and registration, such as psychiatrists, clinical psychologists, or specialist nurses. Depending on the profession, they may be registered with the General Medical Council (GMC), the Health and Care Professions Council (HCPC), or the Nursing and Midwifery Council (NMC). Many services are also inspected by the Care Quality Commission (CQC) in England, or equivalent regulators elsewhere in the UK.

Before booking, it's reasonable to ask: - What qualifications and registration does the assessing clinician hold? - Is the service regulated, and by whom? - How many appointments are involved, and how long does the whole process typically take? - What happens after diagnosis — is there ongoing support or a shared-care arrangement for prescribing?

What does the process usually involve?

While every provider organises things slightly differently, a thorough assessment for ADHD or autism generally includes:

• An initial consultation or screening to understand your concerns and history.
• Structured clinical interviews, often covering childhood development, education, relationships and work.
• Standardised questionnaires or rating scales, sometimes completed by you and by someone who knows you well (a parent, partner or close friend), particularly for children.
• Direct observation or interactive assessment, especially for autism, which may involve structured activities or conversation designed to explore social communication and behaviour.
• A feedback session, where the clinician explains their conclusions, answers questions, and discusses next steps.

Costs vary widely between providers, so it's sensible to ask for a full written breakdown before committing, including whether follow-up appointments, reports, or medication reviews are included.

Reports and next steps

After the assessment, you should receive a written report. This typically summarises the information gathered, the clinical reasoning, and the outcome — whether that's a diagnosis, a recommendation for further assessment, or an explanation of why criteria were not met. A good report should be detailed enough to be shared with a GP, school, or employer if you choose to.

If a diagnosis is given and medication is discussed, remember that decisions about specific medicines or doses are clinical decisions to be made between you and a qualified prescriber — this article cannot and does not offer medical advice on that.

Choosing between NHS and private routes

Some people choose private assessment because of NHS waiting times, while others simply prefer the flexibility of choosing their own provider. It's worth knowing that arrangements such as NHS Right to Choose may allow some patients to select a provider (including some independent services) while remaining within NHS-funded care, though eligibility and availability vary and should be checked with your GP or local NHS service.

Whichever route you take, look for providers who are transparent about their processes, costs and clinicians' credentials, and who make clear that ongoing care, including any prescribing, is properly planned for.

Things to keep in mind

• A diagnosis, whether from the NHS or a private provider, should in principle be recognised across the health system, though in practice shared-care arrangements for prescribing can sometimes be complex — it's worth asking about this in advance.
• Private assessment does not guarantee a particular outcome; a thorough clinician will only diagnose where criteria are genuinely met.
• Always speak to your GP if you have concerns about your mental health, wellbeing, or the care you are receiving, and use registered, regulated services wherever possible.

Understanding what to expect can make the process feel far less daunting, whichever path you choose.

Understanding funding models

Private clinics use a range of funding models. Some charge a single fee covering the full assessment pathway; others itemise each stage separately, such as the initial consultation, the main assessment, the feedback session and the written report. Because these structures differ so much between providers, it is always worth asking for an itemised quote in writing before you commit to anything, so you know exactly what is and isn't included.

It's also worth asking whether the quoted price includes any follow-up support, such as a review appointment a few months after diagnosis, or whether these would be charged separately. Some services bundle in access to post-diagnostic support groups or resources, while others focus purely on the assessment itself.

Waiting times in the private sector

One of the main reasons people consider private assessment is the hope of a shorter wait compared with NHS services in their area. While this can sometimes be the case, availability varies a great deal between providers, times of year, and geographic regions, and can change without much notice. Rather than relying on advertised waiting times, it is sensible to contact a shortlist of providers directly and ask about their current availability before making a decision.

Red flags to watch for

While most regulated providers operate to a high standard, it is worth being alert to signs that a service may not be delivering a sufficiently thorough assessment. These might include a lack of transparency about who is conducting the assessment and their qualifications, extremely short appointment times that seem unlikely to allow a full clinical picture to be built, an unwillingness to provide a written report, or pressure to make a quick decision about medication without adequate discussion. If something doesn't feel right, it is entirely reasonable to seek a second opinion or choose a different provider.