The Cost of Private ADHD Assessments The general public is becoming aware of ADHD thanks to celebrities like Sue Perkins and Nadia Sawalha. However, the long NHS waiting times leave certain people in a precarious situation. Some even have to pay for private treatment. In the UK It is possible http://www.stes.tyc.edu.tw/xoops/modules/profile/userinfo.php?uid=1558379