ADHD Assessment - Why It's Better to Get a Private One Instead of Waiting on the NHS The NHS offers an individual ADHD assessment however, it's a long wait. Some have reported waiting for three years. GPs can refer patients to private clinics or prescribe medications through a shared-care agreement https://psychiatristinuk14365.blogoxo.com/29839798/15-startling-facts-about-adhd-assessment-private-that-you-didn-t-know