They're actually called Whole Life Orders now and the crimes which CAN attract such a sentence are:
(a) Murder of two or more persons, where each murder involves any of the following:
a substantial degree of premeditation or planning,
the abduction of the victim, or sexual or sadistic conduct,
(b) Child murder if involving the abduction of the child or sexual or sadistic motivation.
(c) murder done for the purpose of advancing a political, religious or ideological cause.
(d) Murder by an offender previously convicted of murder,
(e) Other offense if the court considers that the seriousness of the offence (or the combination of the offence and one or more offences associated with it) is exceptionally high.