What is a Private ADHD Assessment? A private adhd assessment london ADHD assessment is a consultation with an expert psychologist. They will examine your psychiatric past and examine the ways in which ADHD symptoms can impact the various aspects of your life. Only UK registered psychiatrists and ADHD nurses are able to diagnose ADHD. However, you can get an assessment from another 'appropriately qualified healthcare professional' [Nice Guidelines]. Psychologists are among them. ...