38.1  If, after the conclusion of the argument on an appeal, a party wishes to bring to the notice of the House new circumstances which have arisen and which might affect the decision or order of the House, application must be made without delay by letter to the Head of the Judicial Office for leave to make new submissions. The application should indicate the circumstances and the submissions it is desired to make, and a copy must be sent to the agents for the other parties to the appeal.