How Much Is a Private ADHD Assessment? If you'd like to be able to reduce the time it takes to get an ADHD assessment, you can do so by opting to pay privately. This option is called Your Right to Choose and is available to all registered GPs in England. https://psychiatrists-uk53633.tinyblogging.com/five-qualities-that-people-search-for-in-every-adhd-assessment-uk-private-73602983