How to Get an ADHD Assessment From a Private Provider It could take months or even years for an ADHD assessment from the NHS. This is due to a lack of specialists and the high demand for services. Private clinics offer a quicker and more comprehensive alternative than the NHS. https://mariowsbez.thelateblog.com/30358642/adhd-diagnosis-private-tips-from-the-most-successful-in-the-business