“… para. 5A now represents another “general principle” to which the court must have regard when making the determination. The structure of Sch.21 of the Act … requires the starting point for the assessment of the minimum terms for adults convicted of murder to be identified by a reference to murders of exceptional seriousness (full life); of particularly high seriousness (30 years); and murders where the seriousness is neither exceptional nor particularly high (15 years). Cases which would normally fall within the exceptional and particularly high levels of seriousness are listed and exemplified in paras 4 and 5 respectively. Nevertheless these lists do not create impenetrable compartments and every case will be subject to its own specific and individual features of mitigation and aggravation. Therefore cases which are not expressly described in paras 4 and 5 may be treated as cases of exceptional or particularly high seriousness, and cases which on their face appear to fall within one or other of the paragraphs may, on examination, be assessed at a lower level of seriousness than at first appeared”
“Careful study of the statutory language that makes clear that paras 4(1) and 5(1) identify not the ultimate decision but “the appropriate starting point” …”