Recent trends in England represent a dramatic erosion of the sanctity of the rule in Woolmington. These developments are of particular significance today, in the light of the virtually open-ended character of some of the contemporary departures from Woolmington’s case.
A decade ago, in Edwards, the Court of Appeal purported to identify in the common law a line of authority which established, as a result of experience and the need to ensure that justice is done both to the community and to the defendants, an exception to the fundamental rule of the criminal law that the prosecution must prove every element of the offence charged. The effect of this exception, which the court sought to extract from rules of pleading, is that where an enactment, on its true construction, prohibits the doing of acts subject to provisos, exceptions and the like, the prosecution is entitled to rely on the exception, with the result that the burden shifts to the defendant to prove that it was lawful for him to do the prohibited act in the circumstances.