14 The Attorney's powers are expressed to be "ancillary to the prerogative". The powers are powers of reference on Petitions of Mercy as the heading to the section still proclaims. Legislative schemes have changed elsewhere, particularly in England[10]. It seems to me that to allow judicial review in this case would involve intrusion by the court into an executive sphere not properly severed from but indeed referrable to the prerogative of mercy[11]. A more recent approach is to say that review of the Attorney's powers is nothing more than review of a statutory discretion with respect to which there is not the reluctance that prevails with respect to a review of the prerogative[12]. In R v Toohey ex parte Northern Land Council the High Court confirmed the existence of a power to review the exercise of statutory powers by the Executive for alleged improper purposes. Prerogative powers were not in issue. There was however some discussion of the basis of earlier authority which had treated the actions of the Governor or other Vice Regal representatives as immune from judicial review. Absent a clear majority view with respect to the direct authority of Horwitz, this Court must adhere to the propositions of law for which that case stands as authority notwithstanding acknowledgment from some of the justices in Toohey that the absence of a power to review the exercise of prerogative powers might be explained on the basis that the subject matter involved was non-justiciable or because no rights were affected, or because there was no duty to exercise the relevant prerogative discretion which had no precise legal limits in terms of scope, purpose or criteria for exercise. Whilst Mason J thought that a justiciable exercise of prerogative power can be subject to judicial review[13], other justices made a clear distinction[14]. Toohey does not overrule Horwitz. Fifty years after Horwitz a powerful English court denied the reviewability of a statutory power ancillary to the prerogative[15]. The approach of the House of Lords in Council of Civil Service Unions v Minister for Civil Service[16], is to have judicial review applicable to the exercise of prerogative or common law powers provided it relates to a public law matter and the subject matter is justiciable. That approach has not been the subject of an express decision in the High Court. There are decisions of several Australian courts accepting the CCSU approach. In this State, in Blyth Hospital v SA Health Commission[17], King CJ referred to the fact that certain types of decisions by the executive government are subject to review by the courts. His view was that the review occurs "irrespective of whether it is made in the exercise of a power derived from statute, common law or the prerogative"[18]. The Chief Justice went on to say that there must be a wide range of executive government decisions based upon policy and political considerations which are not subject to judicial review and which are not subject to a duty to provide persons affected thereby an opportunity to be heard. Paying due respect to the views which favour judicial review being available with respect to the exercise of a statutory power, even if related in some way to the prerogative and assuming that judicial review is available with respect to the Attorney's s369 powers, it must needs be remembered that judicial review is concerned not with the decision but with the decision-making process[19]. It is "concerned with the merits in, at best, no more than a most limited way"[20].