22This Part of this Schedule applies in relation to devolution issues in proceedings in Northern Ireland.
23(1)Proceedings for the determination of a devolution issue may be instituted by the Attorney General for Northern Ireland.
(2)Sub-paragraph (1) does not limit any power to institute proceedings exercisable apart from that sub-paragraph by any person.
24(1)A court or tribunal shall order notice of any devolution issue which arises in any proceedings before it to be given to the Attorney General for Northern Ireland and the Assembly (unless a party to the proceedings).
(2)A person to whom notice is given in pursuance of sub-paragraph (1) may take part as a party in the proceedings, so far as they relate to a devolution issue.
25A court, other than the Court of Appeal in Northern Ireland or the House of Lords, may refer any devolution issue which arises in any proceedings before it to the Court of Appeal in Northern Ireland.
26A tribunal from which there is no appeal shall refer any devolution issue which arises in proceedings before it to the Court of Appeal in Northern Ireland; and any other tribunal may make such a reference.
27The Court of Appeal in Northern Ireland may refer any devolution issue which arises in proceedings before it (otherwise than on a reference under paragraph 25 or 26) to the Judicial Committee.
28An appeal against a determination of a devolution issue by the Court of Appeal in Northern Ireland on a reference under paragraph 25 or 26 shall lie to the Judicial Committee, but only—
(a)with leave of the Court of Appeal in Northern Ireland, or
(b)failing such leave, with special leave of the Judicial Committee.