A statutory instrument by which the power to make, vary, rescind or add to regulations conferred on the Attorney General by section 8 of the M1Prosecution of Offences Act 1879 is exercised shall be subject to annulment in pursuance of a resolution of either House of Parliament, and for the requirement that the approval of the Lord Chancellor and a Secretary of State shall be requisite to the exercise of that power there shall be substituted a requirement that the exercise thereof shall be subject to the concurrence of a Secretary of State.