R v Lee is the leading case in the United Kingdom as to erroneous professional dispensing of a controlled medicine. The case was considered by foremost judges as to any questions of law, namely by a conviction in the Central Criminal Court of England and Wales in front of its President, the Recorder of London, (then a non-guilty plea would, if it had occurred, have been determined by the empanelled jury) and its partly successful appeal in the binding precedent-level Court of Appeal. The case confirmed that a serious error in giving a vulnerable customer a potent drug that does not match in any way the prescription, where such action is not the primary causation of any death or suffering, can result in a prosecution of the responsible pharmacist, with up to 2 years of maximum imprisonment,