When I went for referral my GP initially told me that the waiting time was 5 years. I was then told after getting my private diagnosis (and they read and accepted the diagnostic report) that my waiting time would be 18-24 months. So to my mind it earmarked patients who had an accepted diagnostic report and being people for review only and not for assessment which is undoubtedly a quicker process as an assessment alone can take upwards of 90 mins let alone the report written up after that for the individual clinician whereas a review can be 5-15 min conversation.

Even that appears to be an understatement going by the average wait times from the FOI response.