“ The situation which sometimes arises, and which arose here, can be readily explained. We were helpfully provided by counsel with very lengthy, written submissions, analysing a vast body of material. We had pre-read them. It would have been wasteful of limited time for counsel to have read them out, or to have repeated them using different words. We therefore indicated that we should consider those written submissions after the conclusion of the hearing when we were reflecting on the case as a whole. It was implicit in what we said, and we are sure that counsel understood that we intended to convey, that we should treat the words written on paper as if they had been deployed in oral argument in open court. And that, indeed, is what we did. Subject to questions arising in connection with written submissions on PII applications, or any other express justification for non-disclosure on the basis that the written submissions would not properly have been deployed in open court, we have concluded that the principle of open justice leads inexorably to the conclusion that written skeleton arguments, or those parts of the skeleton arguments adopted by counsel and treated by the court as forming part of his oral submissions, should be disclosed if and when a request to do so is received”