A notice may be given by the Director of Public Prosecutions under this section in respect of an offence falling within subsection (3) below if he is of the opinion—
That opinion must be certified by the Director of Public Prosecutions in the notice.
This subsection applies to an offence—
Subsections (4), (5) and (6) of section 51B above apply for the purposes of this section as they apply for the purposes of that.
The functions of the Director of Public Prosecutions under this section may be exercised by an officer acting on behalf of the Director.
A decision to give a notice under this section shall not be subject to appeal or liable to be questioned in any court (whether a magistrates' court or not).
In this section “child” means—