Diagnosis to Medication in 2-3 weeks

​

Private ADHD Assessment and Diagnosis by a Consultant Clinical Psychologist and Rapid Medication Pathway

​

A thorough, NICE-aligned adult ADHD diagnosis, without the NHS waiting list (often within a week) and without being reduced to a checklist.

​

Free pre-assessment screening using thorough measures (not brief inventories) to give you some indication before you spend money as to whether you are likely to meet criteria.

​

Screening for other conditions that can present as ADHD but may need different approaches.

​

Use of standardised, well-established inventories and the DIVA-5 structured interview.

​

Scored against DSM-V criteria.

​

All diagnoses are 'formal' and above the standard that should be entered into your medical records by your GP surgery.

​

All assessments are conducted online for convenience and fast delivery.

Medication can be started usually within two to three weeks (using a external provider).

​

​

​

Why a psychologist-led assessment is different

​

Psychologists are the only mental health profession trained comprehensively in the science of psychology, and diagnosis is more than ticking criteria off a list. It means integrating information from multiple sources and following specific scientific principles. Done without that training, it's easy to miss a diagnosis, or land on the wrong one.

​

What that means for you:

​

• A real differential, not a rubber stamp. ADHD overlaps with anxiety, trauma and autism. We assess what's genuinely going on, rather than confirming a label you arrived with.

• Multiple sources of evidence, properly weighed. Developmental history, standardised tools  and your lived experience, integrated rather than skimmed.

• A diagnosis you can act on. You leave understanding your profile, your strengths and your needs, with concrete recommendations, not just a result and a referral.

​

​

What your assessment involves

​

1. Free pre-commitment screening puts you in a position to decide whether an assessment is your best option.

​

2. The diagnostic assessment. A two to three hour structured clinical interview using the DIVA-5, conducted online for your convenience.

​

3. Your written report. A full, NICE-aligned diagnostic report (usually within a week), formally issuing your diagnosis (where criteria have been met), the reasoning behind it, and recommendations tailored to you.

​

A diagnosis you can actually use

​

Your report from OYA constitutes a valid, formal and defensible clinical diagnosis, is written to NICE standards and is suitable to share with:

​

• your GP, for entry into your medical records and to support a medication conversation or a shared-care request

• your employer, to support reasonable adjustments or an Access to Work application

• your university or college, to support a Disabled Students' Allowance (DSA) claim

​​

​

What about medication?

​

Diagnosis is the first step; medication is a separate, optional one.

If it's appropriate for you, and you want to explore it, you will be immediately referred into our medication pathway and can have your first appointment within two weeks.

​

This is provided by a external private provider and is costed separately at £300 for the initial appointment and titration, then £120 for monthly appointments until the medications have been stabilised.

​

You're never under any pressure to medicate. The choice is always yours.

​

​

Clear, fixed pricing

​

Adult ADHD Diagnostic Assessment: £950

​

Includes: pre-assessment questionnaires, the full diagnostic interview and your written NICE-aligned report and referral into the medication pathway if desired.

​

​

Who you'll be working with

​

Dr Rob Agnew is a Clinical Psychologist registered with the HCPC (PYL24978). Click here to read more about him:

​​

​

FAQs

​

How long will I wait for an appointment?

You'll usually be seen within 2 weeks, often the same week. 

​​

​

How much does a private ADHD diagnostic assessment cost on its own?

£950, fully inclusive: questionnaires, the assessment, and your written report.

​​

​

How much does a private ADHD diagnostic assessment plus complete medication package cost on its own?

£950, fully inclusive: questionnaires, the assessment, and your written report.

​

Medication pathway is provided by an external CQC registered company who have their own schedule. These are some of the lowest you will find whilst the quality of service is very high. The first appointment where a history is taken, diagnosis is confirmed and the first titration costs £300 (as of June 2026). Further monthly appointments will be necessary (around 3) to ensure the medication is stabilised. At that point your prescription can be taken over by your GP under a shared care protocol.​​​​

​

Will my GP accept the diagnosis?

Reports are written to NICE standards and designed to be recognised by GPs, employers and universities. They are fully acceptable diagnoses and should be entered into your medical records.

​

If the GP has a concern about the diagnosis, they should contact OYA and we will be happy to address it with them (this has never happened).

​

Although uncommon some GPs do not routinely offer shared care agreements. This is at the GPs/surgery's discretion and is usually a practice decision, not due to a poor report. This is something you should take up with your GP practice manager and/or your local integrated care board if necessary.

​​

​

Is the assessment in person or remote?

​

OYA offers online assessments only which reduces missed appointments, is convenient for clients and allows costs to be kept low. As the diagnosis of ADHD is entirely based on interview, meeting in person is completely unnecessary and does not affect the quality of the assessment or diagnostic opinion.

​​

​

Can you assess for autism too?

Yes. This can be combined with an ADHD assessment or can be offered in isolation and is costed differently. It requires a face to face meeting to offer the most thorough assessment and uses the ADOS II and neurodevelopmental interview. 

​

​​

​

What's the difference between a psychologist's and a psychiatrist's assessment?

​

They often look very similar and if they do look different it is usually due to the assessment tools used, not the difference in profession. But you might suppose that a clinical psychologist is trained to doctoral level in the science of psychology, and often will consider a broader range of psychological theories, processes, factors, models and ideas than a psychiatrist. A psychiatrist's report may read as more descriptive and factual and be geared more obviously towards building a case towards medication. 

​​

​

Do you assess children?

Only under exceptional circumstances. Dr Rob Agnew's opinion is that children have not finished developing and their abilities and behaviour varies much more than it does between adults, which requires an MDT approach. These are difficult logistically to organise privately and are out of reach financially for most families. Where possible, OYA recommends following paediatric diagnoses through the NHS.