The indictment must not be double; that is to say, no one count of the indictment should charge the defendant with having committed two or more separate offences This rule though simple to state is sometimes difficult to apply Duplicity in a count is a matter of form, not evidence.
The rule has been described as one of elementary fairness, to enable the defendant to know what it is of which he has been charged or found guilty and so that he has the opportunity of making a no case submission or a sensible plea in mitigation [5] . That duplicity is a matter of form, not a matter relating to the evidence called to support the count, is emphasised by the Court of Appeal in Greenfield [6] . For this reason S v The Queen [7] is, in our view, not a case of duplicity [8] .
1. Archbold, Criminal Pleading, Evidence and Practice, 44th ed (1995), vol 1, p 75.
2. R v General Medical Council; Ex parte Gee [1986] 1 WLR 226 at 238-239. The need for the rule has been questioned by Professor Smith: [1993] Criminal Law Review, p 141.
3. Greenfield, Barker, Creek, Mendleson (1973) 57 Cr App R 849 at 855-856.
4. (1989) 168 CLR 266.
5. See S v The Queen (1989) 168 CLR 266 at 280-281.