A Bill requiring approval by referendum under Article 83(3)(1978 constitution) shall not be submitted to the People until—

(a) it has been passed by a two-thirds majority of the whole number of Members of Parliament; and

(b) the Supreme Court has determined, under Article 120 (1978 constitution) that the Bill seeks to amend a provision forming part of the Basic Structure of the Constitution as defined in Article 83(4)(1978) and therefore complies with the requirement for a referendum.