Like all prosecutors, we are guided by two principles in deciding whether to prosecute. The first is whether there's sufficient evidence that there's a reasonable prospect of conviction. The second is whether the public interest favours a prosecution. That latter category is a fairly discretionary one; however, that discretion has been limited by jurisprudence, and we have a desk book which sets out the principles upon which we'll exercise the discretion in the area of the public interest. That desk book is public; it's on the Internet, so that everyone can see.
On May 17th, 2007. See this statement in context.