National Planning Policy Framework

On a point of order, Mr Speaker, of which I have given you notice. Very recently, in the course of an Adjournment debate, both an hon. Labour Member and myself were refused by a Minister the opportunity to make a brief intervention while he had the floor. He explained in all sincerity afterwards that he thought one had to ask permission in advance of an Adjournment debate—both of the hon. Member whose Adjournment debate it is and of the Minister concerned—whether one could make such an intervention. For the sake of the clarity, would you make an pronouncement on that? If, as I suspect, interventions do not require that sort of prior permission, would you undertake to let Ministers know for the future?