I've been banned but long ago. The doctors have now had new guidelines and habe to report on people who have benzos and opioids who they consider to not be to,era t to these drugs. My GP has cleared me due to the longterm use and has written to say that I am not impaired by the drugs. I do however habe to stay within the prescribed limits. The bottles of oramorph habe written on them that you are breaking the law on driving if you habe more than prescribed, in your bloodstream. My advice is if you decide to have a day of recreational use then leave the car alone and, to be safe, maybe a coup,e of days more. Your insurance will be void and you will do time.
I will ask my GP about testing as this could be pertinent for me