“37. Interim non-disclosure orders, as they restrict the exercise of theArticle 10 Convention right and, whether or not they contain any derogation from the principle of open justice, require the court to take particular care to provide active case management. … 41. Where an interim non-disclosure order, whether or not it contains derogations from open justice, is made, and return dates are adjourned for valid reasons on one or more occasions, or it is apparent, for whatever reason, that a trial is unlikely to take place between the parties to proceedings, the court should either dismiss the substantive action, proceed to summary judgment, enter judgment by consent,…”