The Cost of Private ADHD Assessments The general public is becoming aware of ADHD due to the presence of celebrities such as Sue Perkins and Nadia Sawalha. However, long NHS waiting periods leave some people in a dangerous situation. Some patients are required to pay for treatments that are private. https://telegra.ph/A-How-To-Guide-For-Private-Adult-ADHD-Assessment-UK-From-Start-To-Finish-06-06