2. — (1) If it appears to the Director of Public Prosecutions that a sentence imposed by a court (in this Act referred to as the “ sentencing court ”) on conviction of a person on indictment was unduly lenient, he may apply to the Court of Criminal Appeal to review the sentence.

(2) An application under this section shall be made, on notice given to the convicted person, within 28 days F1[, or such longer period not exceeding 56 days as the Court may, on application to it in that behalf, determine,] from the day on which the sentence was imposed.

(3) On such an application, the Court may either—

(a) quash the sentence and in place of it impose on the convicted person such sentence as it considers appropriate, being a sentence which could have been imposed on him by the sentencing court concerned, or

(b) refuse the application.

(4) Section 6 of the Prosecution of Offences Act, 1974 (which prohibits certain communications in relation to criminal proceedings), shall apply, with any necessary modifications, to communications made to the persons mentioned in that section for the purpose of influencing the making of a decision in relation to an application under this section as it applies to such communications made for the purpose of making a decision to withdraw or not to initiate criminal proceedings or any particular charge in criminal proceedings.

F2[(5) Where the convicted person in relation to whom an application under this section is made is a person who was under the age of 18 years when the sentence was imposed on him by the sentencing court concerned and he has attained the age of 18 years on or before the date on which the application is determined by the Court, the reference in subsection (3)(a) to a sentence which could have been imposed on him by the sentencing court concerned shall be construed as a reference to a sentence which could have been imposed on him by the sentencing court concerned had he attained that age at the time when the sentence was so imposed.

(6) Where subsection (5) applies and the application under this section is in respect of a sentence imposed on a person convicted of treason or murder before the person has attained the age of 18 years, the Court may, notwithstanding section 2 of the Criminal Justice Act 1990, impose such sentence as it considers appropriate.]