There are, so far as the author is aware, no reported judgments, rules, practice directions, or practice notes setting out relevant principles for whether the court will include a penal notice on an order granting an injunction (whether mandatory or prohibitory). It is likely that there are a number of reasons for this. First, the purpose of a penal notice being endorsed on an order is to assist in enforcing that order through an application for committal for contempt of court. CPR 81 has always included a provision to the effect that an application for committal must state whether the relevant order contained a penal notice (this requirement is set out in CPR 81.4(2)(e) in the current iteration of CPR 81). It follows that the emphasis in the authorities considering penal notices very much rests on whether the court ought to waive the requirement for a penal notice (see, for example, Serious Organised Crime Agency v