Expert ADHD & Mental Health Assessments
Led by GMC-registered doctors, CQC-certified, and trusted by thousands. Virtual & in-person appointments available. Fully NICE compliant.
The problems we solve
Harley Street Mental Health, we understand the challenges patients face when it comes to mental health assessments and treatment. Our mission is to simplify the process and provide the support you need in a straightforward, compassionate manner.
Struggling in Silence
- Long waiting lists
- Lack of expertise
- Limited personalised care
- No continuity of care
Empowered & Supported
- Next day appointments
- Expert Clinicians
- Personalised Treatment Plans
- Responsive Team
The problems we solve
Harley Street Mental Health, we understand the challenges patients face when it comes to mental health assessments and treatment. Our mission is to simplify the process and provide the support you need in a straightforward, compassionate manner.
Struggling in Silence
- Long waiting lists
- Lack of expertise
- Limited personalised care
- No continuity of care
Empowered & Supported
- Next day appointments
- Expert Clinicians
- Personalised Treatment Plans
- Responsive Team
Support & Solutions
Harley Street Mental Health, we specialise in assessments and treatments for a variety of mental health conditions, with a strong focus on ADHD.
Adult ADHD Assessment
Expert NICE compliant assessment with GMC registered doctors to diagnose ADHD in adults and create personalised support strategies.
Childhood ADHD Assessment
See a CAMHS consultant psychiatrist for an expert, NICE compliant childhood ADHD assessment.
Autism (ASC) Assessment
Professional diagnosis and management plan for individuals on the autism spectrum.
Psychiatric Assessment
Medico – Legal, Capacity Assessments, Driving Offences, Visa EvalIn-depth mental health evaluation with consultant psychiatrist for accurate diagnosis and effective treatment optionsuation, Supervision and Immigration Psychiatry.
Specialised Services
Medico – Legal, Capacity Assessments, Driving Offences, Visa Evaluation, Supervision and Immigration Psychiatry
Harley Academy
Expert CPD approved training courses for professionals on how to diagnose and manage ADHD
Your path to better mental health today
Start your mental health journey with expert care and support today. Our compassionate approach ensures you receive the guidance, tools, and resources needed to navigate challenges with confidence.
Whether you’re managing ADHD or other mental health concerns, we’re here to empower you every step of the way. Take the first step toward a healthier, happier you because your wellbeing matters.
The Harley Street Mental Health Philosophy
Harley Street Mental Health was created by Psychiatrists with a clear goal of providing psychiatric care based on our service users needs and the most up-to-date evidence-based medicine, rather than relying on a “one size fits all” approach.
Personalised Care
Empathetic Approach
Why patients choose us for ADHD Assesments?
Start your mental health journey with expert care and support today. We make mental health assessments easier, faster, and more transparent. Our team of GMC-registered doctors follows NICE guidelines and CQC regulations, ensuring you receive the highest standard of care.
GMC Registered
Know that your assessment will always be undertaken by a GMC registered doctor
NICE Compliant
All assessments provided by Harley Street Mental Health exceed the guidance set by NICE, UKAAN and AQAS
Tailored Treatment Plans
Support based around your life, wants and needs rather than any "one size fits all" approach
Ease of Access
See us in person at 10 Harley Street, or virtually from the comfort of your own home, keep continuity of care
The path to wellness
We believe in making the process as smooth as possible, with full transparency and easy navigation.
Pre-Appointment
During the Appointment
Post Appointment
Completion of Treatment
The path to wellness
We believe in making the process as smooth as possible, with full transparency and easy navigation.
Pre-Appointment
Book online, choose clinician, prepare for consultation.
During the Appointment
Receive assessment from a professional who listens.
Post Appointment
Receive detailed results with tailored recommendations.
Completion of Treatment
Follow-up support ensures continued progress on track.
Frequently Asked Questions
Get answers to common questions about our services, assessments, appointments, and treatment process.
A private ADHD assessment is a comprehensive evaluation carried out by a qualified mental health professional to determine whether you meet the criteria for Attention Deficit Hyperactivity Disorder (ADHD). At Harley Street Mental Health, our private adult ADHD assessments in the UK include an in-depth clinical interview, evidence-based diagnostic tools such as the DIVA 5.0, and a review of developmental history and current symptoms. Assessments typically explore how ADHD symptoms impact areas such as work, education, relationships, and daily functioning.
Choosing a private ADHD assessment offers faster access to diagnosis and treatment compared to NHS waiting times. Following the assessment, a formal diagnostic report is provided, and if a diagnosis is confirmed, we offer guidance on ADHD treatment options, including medication, therapy, and lifestyle strategies.
Yes, all of our private ADHD assessments at Harley Street Mental Health are fully compliant with the National Institute for Health and Care Excellence (NICE) guidelines for the diagnosis and management of ADHD. We go beyond the standard requirements by also following the Associated Quality Assured Standards (AQAS) developed by UK adult ADHD specialists. This ensures that our assessments are not only evidence-based but also reflect best practices in the field.
Our clinicians use validated diagnostic tools such as the DIVA 5.0 and follow a structured clinical interview format that meets and exceeds NICE standards. This comprehensive approach includes a detailed review of your developmental history, current symptoms, and the impact of ADHD across different areas of life, including education, work, relationships, and everyday functioning.
By exceeding national guidelines, we aim to provide the highest standard of ADHD care available privately in the UK.
Booking is quick and easy. Simply visit our website, select your service, and choose a suitable time.
Yes, we provide both in-person assessments at 10 Harley Street and secure virtual consultations.
You will receive your detailed assessment report within 3 to 5 days after your consultation. In most cases you will receive this sooner
Absolutely. Our team consists of GMC-registered doctors and accredited specialists following NICE guidelines.
Yes, we offer a straightforward repeat prescription service for ongoing treatment management.
The initial assessment fee is £745 if conducted virtually, and £1200 If conducted in person at 10 Harley Street. Find out more about our pricing here – https://hsmh.co.uk/our-pricing
At Harley Street Mental Health, we offer expert assessment, diagnosis, and treatment for a wide range of psychiatric and neurodevelopmental conditions beyond ADHD. Our team of highly experienced psychiatrists and clinicians are able to support individuals with conditions such as:
- Depression and Mood Disorders
- Generalised Anxiety Disorder (GAD) and other Anxiety Conditions
- Obsessive Compulsive Disorder (OCD)
- Autism Spectrum Disorder (ASD) in adults
- Post-Traumatic Stress Disorder (PTSD)
- Complex Post-Traumatic Stress Disorder (C-PTSD)
- Social Anxiety and Health Anxiety
- Sleep Disorders related to mental health
- Phobias
We provide private psychiatric assessments, tailored treatment plans, and ongoing support, including both medication and psychological therapies. Our approach is patient-centred, evidence-based, and designed to ensure you receive the right care at the right time.
Whether you’re seeking help for a new concern or a second opinion on an existing diagnosis, we’re here to provide fast, confidential access to high-quality mental health care.
ADD (Attention Deficit Disorder) and ADHD (Attention Deficit Hyperactivity Disorder) refer to the same condition, but the terminology has evolved. ADHD is the current medical term used to describe individuals who have difficulties with attention, impulsivity, and/or hyperactivity, even if hyperactivity isn’t a prominent symptom.
Historically, ADD was used to describe individuals who had trouble with attention and focus but did not show signs of hyperactivity. Today, this would be diagnosed as ADHD, Predominantly Inattentive Presentation, one of three recognised subtypes under the modern ADHD diagnostic criteria.
At Harley Street Mental Health, we assess for all presentations of ADHD, including:
- Predominantly Inattentive Type (formerly known as ADD)
- Predominantly Hyperactive-Impulsive Type
- Combined Type
Yes, we have a dedicated team of CAMHS consultant psychiatrists that can diagnose and treat ADHD in individuals aged under 18
If you have been diagnosed elsewhere, and want to transfer your care to Harley Street Mental Health please do get in touch and we can guide you through the process.
How do I book an appointment?
Booking is quick and easy. Simply visit our website, select your service, and choose a suitable time.
Do you offer in-person and virtual consultations?
Yes, we provide both in-person assessments at 10 Harley Street and secure virtual consultations.
How soon will I receive my assessment report?
You will receive your detailed assessment report within 3 to 5 days after your consultation.
Are your clinicians qualified and accredited?
Absolutely. Our team consists of GMC-registered doctors and accredited specialists following NICE guidelines.
Can I get a repeat prescription?
Yes, we offer a straightforward repeat prescription service for ongoing treatment management.
Book your assessment today
Have a glance at the calendar and select a good time for you.
What our patients say about us
Read real experiences from our patients—trusted, professional care that makes a lasting impact on mental health.
Enrolling in Harley Street Academy was the best decision I’ve made for my personal and professional growth. The mental health courses are not only deeply informative but also emotionally enriching. I now feel confident supporting clients with real empathy and evidence-based tools.
Sarah M.
I’ve attended multiple training programs, but none come close to the level of care, depth, and professionalism I found here. The tutors are industry experts who genuinely care about your success.
James R.
As someone new to the mental health field, I felt incredibly supported. The course content is well-structured, and the team creates a safe space to ask questions and grow. I now feel equipped to begin my career with confidence.
Aisha K.
What I learned at Harley Street Academy translated directly into my day-to-day practice. Whether you’re a nurse, coach, or therapist, their approach is practical and highly applicable.
Michael T.
EXCELLENT Based on 239 reviews Posted on Nahyaan Poonawala2025-10-06Trustindex verifies that the original source of the review is Google. Warm, professional, and evidence-based care. I've made real progress after years of struggling.Posted on Aidan George2025-10-06Trustindex verifies that the original source of the review is Google. Just had my first appointment with Dr. Sullivan, and I couldn’t be more relieved. As an international student, I had a lot of worries going into the process, but she immediately put me at ease. Despite me being late, she was incredibly accommodating and helped move things forward quickly, something that would normally take much longer. Hussnen has also been fantastic, always quick to respond and helpful with every query. I’m really glad I chose Harley Street, it’s made all the difference.Posted on Luke Gracestone2025-10-05Trustindex verifies that the original source of the review is Google. I was seen by Dr Sijjad Ijaz who was absolutely brilliant. He went through all the questions with real sensitivity and interest - it was a very human experience. I can't compliment him enough on his excellent bedside manner and knowledge about neurodiversity. I was really impressed and was sent a full assessment shortly after the consultation which was really well put together and reflected what I also felt were the most important elements of how my condition affects me. 5 Stars to Dr Izaj and Harley Street Mental Health.Posted on Carina Brasil da Cunha2025-10-05Trustindex verifies that the original source of the review is Google. I had an ADHD assessment consultation with Dr Sijjad Ijaz and couldn’t have felt more at ease or better looked after. From the outset, he was warm, attentive, and thorough—he asked thoughtful questions, explained the process clearly, and checked I understood each step before moving on. I really valued how collaborative the consultation felt. Dr Ijaz’s manner strikes a great balance between professional and human. We even found a minute to chat about Formula 1—which made the session more relaxed without ever losing focus. The final report was clear and detailed, and I left with a confident plan for next steps, including follow-up and medication considerations. Overall, an excellent experience: timely, respectful, and genuinely helpful. I’d highly recommend Dr Ijaz and Harley Street Mental Health to anyone considering an ADHD assessment.Posted on anon jones2025-10-01Trustindex verifies that the original source of the review is Google. I cannot recommend Harley Street Mental Health enough. During a particularly challenging time with family troubles, the team was incredibly understanding and flexible. When I was unable to complete all the screening questionnaires on time, they promptly rescheduled appointments, allowing me the necessary space and support to get everything done without added stress. A special thank you to Dr. Sijjad Ijaz, who provided exceptional care during my diagnosis process for ADHD. His professionalism and deep knowledge of ADHD and medication were evident, yet he also maintained a warm, approachable manner that made me feel comfortable and understood. His ability to discuss complex topics in an informal, human way truly set him apart. Dr. Sijjad Ijaz’s dedication goes beyond his practice; I’ve heard he's a hero in helping children in A&E, which speaks volumes about his commitment to mental health and community service. I am grateful for his support and expertise, he made a difficult process much easier and more reassuring. If you're seeking compassionate, expert mental health care, Harley Street Mental Health and Dr. Sijjad Ijaz are the best choice.Posted on Tony Barnfather2025-09-28Trustindex verifies that the original source of the review is Google. Dr Sijjad Ija was the ultimate professional. Thorough and empathetic in what was a detailed and at times difficult lengthy review and assessment process.Posted on Maya Florence2025-09-26Trustindex verifies that the original source of the review is Google. Dr Sijjad was wonderful! I felt comfortable and safe during my assessment.Posted on bruce brenner2025-09-23Trustindex verifies that the original source of the review is Google. Dr Sijjad Ijaz conducted an ADHD assessment on me, which concluded with a positive diagnosis, and treatment plan (medication). The process was incredibly fast and efficient, yet highly professional and thorough. It only took 48 hrs from my initial contact with Harley Street Mental Health to my assessment with Dr Sijjad Ijaz, which I was amazed at having had to wait many months for my children to be assessed privately (not by Harley Street). I highly recommend Harley Street Mental Health, and Dr Sijjad Ijaz for ADHD assessment/diagnosis.Posted on Dorian Rees2025-09-23Trustindex verifies that the original source of the review is Google. Harley street mental health have been exceptionally quick with my adhd assessment and report. Dr Sijjad Ijaz was very easy to talk to and very thorough. He was very professional and the report that has been made is very detailed. I cannot thank Harley street mental health enough. Highly recommended!!Verified by TrustindexTrustindex verified badge is the Universal Symbol of Trust. Only the greatest companies can get the verified badge who has a review score above 4.5, based on customer reviews over the past 12 months. Read more