Where a person, whether charged with an offence or not, is brought before any court otherwise than for the purpose of giving evidence, and it appears to the court that he is a child or young person, the court shall make due inquiry as to the age of that person, and for that purpose shall take such evidence as may be forthcoming at the hearing of the case, but an order or judgment of the court shall not be invalidated by any subsequent proof that the age of that person has not been correctly stated to the court, and the age presumed or declared by the court to be the age of the person so brought before it shall, for the purposes of this Act, be deemed to be the true age of that person, and, where it appears to the court that the person so brought before it has attained F1the age of eighteen years, that person shall for the purposes of this Act be deemed not to be a child or young person.

Where in any charge or indictment for any offence under this Act or any of the offences mentioned in the First Schedule to this Act F2except as provided in that Schedule, it is alleged that the person by or in respect of whom the offence was committed was a child or young person or was under or had attained any specified age, and he appears to the court to have been at the date of the commission of the alleged offence a child or young person, or to have been under or to have attained the specified age, as the case may be, he shall for the purposes of this Act be presumed at that date to have been a child or young person or to have been under or to have attained that age, as the case may be, unless the contrary is proved.

Where, in any charge or indictment for any offence under this Act or any of the offences mentioned in the First Schedule to this Act, it is alleged that the person in respect of whom the offence was committed was a child or was a young person, it shall not be a defence to prove that the person alleged to have been a child was a young person or the person alleged to have been a young person was a child in any case where the acts constituting the alleged offence would equally have been an offence if committed in respect of a young person or child respectively.

Where a person is charged with an offence under this Act in respect of a person apparently under a specified age it shall be a defence to prove that the person was actually of or over that age.