210. English law and international law.

210.     English law and international law.

The exercise of jurisdictional powers will ordinarily be through acts of and under national legislation1. The examples given here are mainly from English law (which includes the common law as an exercise of prescriptive jurisdiction) but it should not be understood that the discretions exercised by the English authorities in all cases go to the maximum of what international law would permit2. Until recently, the United Kingdom has been cautious about exercising extraterritorial, prescriptive criminal jurisdiction3. The pre-eminence of the territorial principle is as much a reflection