Section 41: Relation to other courts etc
162.This section makes provision as to the effect of decisions of the Supreme Court as judicial precedents. The essence of the provision is that a decision made by the Supreme Court under particular jurisdiction should have the same effect as a decision of the body in which the jurisdiction is currently vested (whether that is the House of Lords or the Judicial Committee of the Privy Council). So in the case of jurisdiction transferred from the House of Lords, a decision of the Supreme Court on an appeal from one jurisdiction within the United Kingdom will not have effect as a binding precedent in any other such jurisdiction, or in a subsequent appeal before the Supreme Court from another such jurisdiction. In the case of the devolution jurisdiction transferred from the Judicial Committee of the Privy Council, a decision of the Supreme Court will be binding in all legal proceedings except for subsequent proceedings before the Supreme Court itself.
163.Subsection (1) provides that nothing in the provisions of the Act about the Supreme Court is to affect the distinctions between the separate legal systems of the parts of the United Kingdom. This recognises that those legal systems are separate, and that there is a variety of distinctions between them, so that, for example, Scotland differs from Northern Ireland in some ways, and in other ways from England and Wales.
164.Subsection (2) provides that a decision of the Supreme Court on an appeal from a court in one part of the United Kingdom is to be regarded as the decision of a court of that part of the United Kingdom. So, for example, a decision on appeal from the Court of Session would be regarded as a decision of a Scottish court, and would have binding effect in Scottish courts accordingly, but would not have binding effect in English courts (although it might, like the decision of the House of Lords in Donoghue v. Stevenson, be found by English courts to be so persuasive an authority as to be readily followed). Subsection (2) does not apply in relation to decisions in devolution proceedings.
165.Subsections (3) and (4) make provision to maintain the status quo in relation to the effect of decisions in devolution proceedings. The status quo is that, by virtue of section 103(1) of the Scotland Act 1998, section 82(1) of the Northern Ireland Act 1998 and paragraph 32 of Schedule 8 to the Government of Wales Act 1998, a decision of the Judicial Committee of the Privy Council in the exercise of its devolution jurisdiction is “binding in all legal proceedings (other than proceedings before the Committee)”.
166.Subsection (3) accordingly provides that a decision of the Supreme Court on a devolution matter will not bind the Court itself when subsequently making a decision on a devolution matter, but will otherwise be “binding in all legal proceedings”, mirroring the wording of section 103(1) of the Scotland Act 1998 and its counterparts.
167.Subsection (4) defines “devolution matter”, by reference not only to those matters which are “devolution issues” in the Scotland Act, Northern Ireland Act and Government of Wales Act, but also to the possibility of a reference to the Court, under the Scotland Act and Northern Ireland Act alone, of the question whether a Bill or part of a Bill of the Scottish Parliament or Northern Ireland Assembly is within the Parliament’s or Assembly’s legislative competence.