The Cost of Private ADHD Assessments ADHD awareness is increasing thanks to high-profile figures like Sue Perkins and Nadia Sawalha However, the long NHS waiting times have left some people who need the diagnosis in a precarious situation. Some patients are required to pay for private treatments. In the UK http://www.stes.tyc.edu.tw/xoops/modules/profile/userinfo.php?uid=1556715