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ADHD can present differently from one person to another, and many people reach adulthood without recognising that their difficulties may be linked to the condition.
Common signs include:
Finding organisation, admin and everyday planning overwhelming
Struggling to begin or complete tasks, even when they are important
Relying on deadlines or a sense of urgency to stay motivated
Losing track of time, frequently running late or underestimating how long tasks will take
Forgetting appointments, misplacing belongings or overlooking important details
Experiencing restlessness, racing thoughts or difficulty switching off at night
Making impulsive decisions, purchases or comments you later regret
Experiencing emotions quickly and intensely, followed by feelings of exhaustion
ADHD symptoms can be less easily recognised in women, meaning they may go unnoticed for many years. Learn more about ADHD in women.
This short screening tool can help you understand whether a full ADHD assessment may be appropriate for you.

Getting tested for adult ADHD should be clear and straightforward. Our assessment for ADHD provides a thorough, supportive assessment from your first appointment through to diagnosis and, where appropriate, treatment.
Choose an ADHD assessment online or visit our London clinic, with weekday and weekend appointments available.
Fill in clinically validated screening forms before your appointment. We may also request input from someone who knows you well to help us understand how your symptoms have affected you over time.
During a 60–90-minute consultation, a specialist clinician will assess your symptoms, history and daily life using the DIVA framework, DSM-5 criteria and NICE guidance. You will receive your outcome, written report and proposed treatment plan within five working days.
If medication is recommended and you decide to proceed, you will begin a titration period with regular reviews from your psychiatrist or one of our specialist ADHD pharmacists. This allows us to find the medication and dose that work best for you. Once your treatment is stable, we may be able to arrange a Shared Care Agreement so your NHS GP can take over routine prescribing.
What's included:
Your full diagnostic assessment (extended, or completed at a follow-up at no extra cost, if more time is needed) and a written report with your clinical diagnosis and proposed treatment plan within 5 working days. Our comprehensive ADHD evaluation considers your symptoms, personal history and how these difficulties affect different areas of your life.
Ongoing treatment costs:
If you decide to try medication, follow-up titration reviews for adults are brief 15-minute appointments at £150. Medication costs are paid directly to the dispensing pharmacy. After titration, we can arrange a Shared Care Agreement with your GP. Our shared care plans have been accepted by over 1,600 GP practices across the UK.
Flexible finance:
Spread the cost of your assessment in instalments through Payl8r.
If you are considering an adult ADHD assessment UK service, there are three main routes to an adult ADHD diagnosis in England, depending on how quickly you would like to be seen and whether you prefer private or NHS-funded care. Berkeley Psychiatrists can support you through the first two options.
Usually the quickest route, you can book directly, attend an appointment within days, and receive a full report within five working days. Fees start from £745.
If you live in England, you can ask your GP to refer you to Berkeley Psychiatrists for an NHS-funded assessment under Right to Choose. There is no cost to you, although waiting times are typically longer than for private appointments.
Alternatively, your GP can refer you to your local NHS ADHD service. This is also NHS-funded, but waiting lists in many areas currently extend to several years.
Whichever route you choose, your assessment will be carried out by a specialist clinician in line with NICE guidance. Berkeley Psychiatrists is registered with the CQC, and diagnoses made by our clinicians are recognised by the NHS. Shared care remains at the discretion of the individual GP practice.
Assessments are carried out by experienced psychiatrists and specialist clinicians, many with senior NHS experience.
Our care is regulated by the CQC, and every assessment follows NICE guidance.
Book online seven days a week. We offer private ADHD assessments at our clinic on Harley Street, London.
More than 1,600 GP practices have accepted our Shared Care Plans, allowing many patients to move routine prescribing to their NHS GP once stable.
Our pricing is clear from the outset, with flexible payment options available through Payl8r.
From assessment and diagnosis to titration, prescriptions, coaching and reviews, you will have continued support.
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Online adult ADHD assessments start from £745, while an in-person assessment at our London clinic starts from £1,045. The fee includes a 60–90-minute diagnostic assessment and a full written report within five working days.
Appointments are usually available within days, including evenings and weekends. You can attend online or in person, avoiding NHS waiting lists that can extend to several years in some areas.
Your clinician will conduct a structured 60–90-minute diagnostic interview using the DIVA framework. They will also review your pre-assessment questionnaires, consider information from someone who knows you well and screen for co-occurring conditions. Your symptoms will be assessed against DSM-5 criteria and in line with NICE guidance.
Yes, our CQC-registered assessments are carried out by specialist clinicians in line with NICE guidance. Following titration, more than 1,600 GP practices have accepted our Shared Care Plans for ongoing NHS prescribing. However, shared care remains at the discretion of your individual GP practice.
Without the right support, ADHD can contribute to ongoing disorganisation, difficulties at work or in education, financial problems and strained relationships. It can also affect self-esteem and occur alongside anxiety or depression. Many adults develop demanding coping strategies that mask their symptoms for years.
ADHD does not begin in adulthood; it is a neurodevelopmental condition that starts in childhood. However, symptoms may go unnoticed until later, particularly when the structure provided by school or family life falls away and everyday demands increase.
ADHD itself doesn't necessarily worsen with age, but its impact can, as responsibilities grow and demands on organisation and focus increase. Hyperactivity often becomes less visible in adults, while inattention and internal restlessness persist. Effective treatment improves symptoms at any age.
Common difficulties include starting and completing tasks, managing time, staying focused on routine work and keeping up with organisation or admin. Emotional regulation and impulsivity can also affect work, relationships and self-esteem.
Yes. If you live in England, you can ask your GP to refer you to Berkeley Psychiatrists for an NHS-funded ADHD assessment under Right to Choose. Visit our NHS Right to Choose page to learn how to request a referral.
Take the first step towards clarity. Book online in minutes, or call our team on 020 3970 0335 with any questions about booking, fees or finance options.