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A private assessment with an ADHD psychiatrist can mean you finally have answers and ways forward 

Questions depicting a counselling psychologist in London

Updated Jan 20, 2022 by Dr. Sheri Jacobson Dr Sheri Jacobson

ADHD Assessment at Harley Therapy™ London

Do I have attention deficit disorder? 

  • Can't focus, and never finish what you start? And it holds you back not just at work, but with relationships?
  • Constantly regretting your words and actions, but can't seem to change, no matter how hard you try?
  • And living with a nagging sense that you aren't living up to your potential?

ADHD in adults

The three main symptoms of ADHD are inattentiveness, hyperactivity, and impulsivity.

In adults, hyperactivity can manifest less as the boisterousness seen in children, and more as restlessness. This can look like speaking too fast and too often, or rushing around, constantly busy. 

Note you do not need to have all three symptoms for a diagnosis. While you might be seen as 'combined type', meaning you have both hyperactivity and impulsive behaviour, others are diagnosed as 'predominately inattentive', meaning the main symptom is distraction. The point is that the symptom(s) you have affect your ability to cope across several areas of your life. 

Common symptoms of adult ADHD 

  • difficulty focusing and then hyperfocusing on the wrong things
  • disorganisation and trouble finishing things 
  • impulsive decision making 
  • emotional difficulties like impatience 
  • relationship problems 
  • restlessness and edginess.

Why do an ADHD assessment at Harley Therapy™?

We recognise that finally being tested for ADHD as an adult can be a big step. And that a private ADHD assessment is a serious financial investment.

At Harley Therapy you can relax in knowing you are in the best of hands, working with experienced health professionals who are actual ADHD specialists, not just generalists taking clients on the side. 

Psychiatrists Dr Stephen Humphries and Dr Phil Ferreira-Lay are some of the UK's top experts in ADHD diagnosis and treatment. With over 50 years of combined medical experience, they have helped thousands of clients with attention deficits to get their life back on track. 

Dr Maria Daves is a psychologist and specialist ADHD coach. She previously worked for the NHS diagnosing both ADHD and autism in adults, and has a longstanding interest in the unique challenges women on the neurodevelopmental spectrum face.  

Find out how we can help you

Ready to stop the constant struggle of living with undiagnosed ADHD? 

Get in touch now by phone or online to make a confidential appointment for your ADHD assessment in London.

The Benefits of an ADHD Diagnosis   

The benefits of an assessment include: 

  • finally understanding your behaviour and being able to explain it to others
  • recognising and building on your strengths 
  • learning strategies that help you cope better
  • accessing support and services to make things easier for you and your family
  • moving forward at last with life goals and no longer feeling trapped by your own mind
  • improved relationships.  

Why do I have ADHD now I'm an adult?

You don't just suddenly develop attention deficit disorder as an adult. It would have been there since childhood. It's just that the struggles of some children are overlooked. 

ADHD often goes undiagnosed in children who have high IQs, for example, who can find ways to compensate. It's only when faced with the many responsibilities of adult life that symptoms become more apparent. 

And it's now understood that symptoms can be different in girls than boys, with the former being more prone to being inattentive and dreamy over hyperactive. Many adult women had their struggles overlooked when a child.  

What is an adult ADHD assessment like? 

The main diagnostic guidance followed in the UK is put out by the National Institute for Health and Care Excellence (NICE). It takes into account both the DSM-5 and ICD-10 guidelines.

An adult ADHD assessment can include:

  • taking a full history of your psychiatric health and development (learning and challenges in childhood, etc)
  • questionnaires looking at how your symptoms affect the different areas of your life, including how you behave and socialise and your everyday coping
  • talking about your current life, such as work, family, finances, and relationships 
  • observing how you interact, and your mental state
  • looking at coexisting mental health issues and conditions and also your physical health
  • having a person or people close to you fill out reports about how you behave. 

Related diagnoses and issues 

Your ADHD psychiatrist can also diagnose common co-occuring mental health issues such as: 

  • addictions
  • anxiety and depression
  • eating disorders
  • learning differences 
  • low self-esteem
  • personality disorders
  • sleep problems.

If it turns out that you don't qualify as having ADHD, you might still end up with a diagnosis of another disorder with similar symptoms. This includes borderline personality disorder or anxiety disorder. 

Recommended treatment for adult ADHD 

Your ADHD specialist will create a multidisciplinary treatment plan which will address your psychological, behavioural, and occupational/educational needs. 

Medication is offered in serious cases and should be combined with psychological treatments and support, such as psychotherapy or ADHD coaching. Go to our ADHD treatment page for thorough details on treatment and medication options at Harley Therapy.

Further reading about ADHD in adults 


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The UK Council for Psychotherapy

The UK Council for Psychotherapy (UKCP) is the UK’s leading organisation for psychotherapists and psychotherapeutic counsellors. It regulates and registers trained and trainee counsellors.

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The British Association for Counselling and Psychotherapy

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Mind is a mental health charity covering England and Wales. It offers support to people with mental health problems and lobbies local and national governments.

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Turning Point is a UK charity and social enterprise which works in the mental health, learning disabilities, substance abuse, criminal justice and employment areas.

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The Mental Health Foundation

The Mental Health Foundation is a UK charity which helps people to understand, protect and improve their mental health.

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Harley Therapy Ltd. “ADHD and ADD Test London • Private Psychology • Harley Therapy™”. Harley Therapy, 20 Jan. 2022, https://www.harleytherapy.co.uk/adult-adhd-assessment-london.htm. Accessed 23 May. 2022.


Harley Therapy Ltd. (2022, January 20). ADHD and ADD Test London • Private Psychology • Harley Therapy™. Retrieved from https://www.harleytherapy.co.uk/adult-adhd-assessment-london.htm


Harley Therapy Ltd. "ADHD and ADD Test London • Private Psychology • Harley Therapy™." Last modified January 20, 2022. Accessed May 23, 2022. https://www.harleytherapy.co.uk/adult-adhd-assessment-london.htm.

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