(1) No person shall suffer death for murder and a person convicted of murder shall, subject to Article 45(2) of the Criminal Justice (Children) (Northern Ireland) Order 1998 (detention of children at Secretary of State’s pleasure) , be sentenced to imprisonment for life.
(2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(4) For the purpose of any proceedings on or subsequent to a person’s trial on a charge of capital murder, that charge and any plea or finding of guilty of capital murder shall be treated as being or having been a charge, or a plea or finding of guilty, of murder only; and if at the commencement of this Act a person is under a sentence of death for capital murder, the sentence shall have effect as a sentence of imprisonment for life.
(5) In this section “ capital murder ” means a murder which immediately before the commencement of this Act is a capital murder within the meaning of section 10 of the Criminal Justice Act (Northern Ireland) 1966.