"(1) This section applies where -- (a) a person is convicted of a serious offence committed after September 30, 1997, and (b) at the time when that offence was committed, he was 18 or over and had been convicted in any part of the United Kingdom of another serious offence. (2) The court shall impose a life sentence, that is to say -- (a) where the offender is 21 or over when convicted of the offence mentioned in subsection (1)(a) above, a sentence of imprisonment for life, (b) where he is under 21 at that time, a sentence of custody for life under section 94 above, unless the court is of the opinion that there are exceptional circumstances relating to either of the offences or to the offender which justify its not doing so. (3) Where the court does not impose a life sentence, it shall state in open court that it is of that opinion and what the exceptional circumstances are. (4) An offence the sentence for which is imposed under subsection (2) above shall not be regarded as an offence the sentence for which is fixed by law."
"The circumstances of this defendant's offending, his mental condition, the inability of experts to detect when he is at his most dangerous, and his settled desire to cannibalise his victims, all combine to make him so uniquely dangerous that the court will wish to consider whether the determinate period of the life sentence to be imposed should be a whole life sentence, and there will be submissions, of course, both from the Crown and the defence in that regard."
"I bear in mind your pleas of guilty, and I accept, of course, that your responsibility for each crime was substantially impaired through your mental illness, and I have regard to that. Although substantially impaired, you do of course bear a criminal responsibility. You were not insane when you committed these offences, nor are you unfit to be tried here today, and you have pleaded guilty in this court to criminal offences. And so you acknowledge that you bear a responsibility, even though [responsibility for] each crime was substantially impaired by your mental illness. What I have to do is to consider the nature of the crimes and the gravity of them. The first point: there are two crimes, separated by that short period of time of some two months or so. That is a very important feature here, particularly bearing in mind that you have a previous conviction for manslaughter some eleven years ago now. You have killed three people in that period of eleven years, so when assessing your culpability, I am dealing with a man who has killed three times, and on the last occasion whilst in custody upon a charge of murder, as you then were. Next, the violence on each occasion was extreme and unpredictable, as I have said, accompanied by bizarre sexual and sadistic overtones. You killed on these two occasions because it gave you a thrill, and a feeling of power when you ate flesh, as you did in the case of Mr C. and intended to do in the case of Mr L., and you obtained a sexual pleasure from what you were doing. These were emotions which you felt, and the seriousness of the case, I have no doubt whatever, is exceptionally high, even having regard to your illness. Therefore, I have come to the conclusion in the circumstances of this quite exceptional case that you must never be released from prison."
"In considering the seriousness of any offence, the court may take into account any previous convictions of the offender or any failure of his to respond to previous sentences."
"(1) In considering the seriousness of any offence, the court must consider the offender's culpability in committing the offence and any harm which the offence caused, was intended to cause or might forseeably have caused. (2) In considering the seriousness of an offence ('the current offence') committed by an offender who has one or more previous convictions, the court must treat each previous conviction as an aggravating factor if (in the case of that conviction) the court considers that it can reasonably be so treated having regard, in particular, to -- (a) the nature of the offence to which the conviction relates and its relevance to the current offence, and (b) the time that has elapsed since the conviction."