“A costs capping order may not be made by the High Court or the Court of Appeal in connection with judicial review proceedings except in accordance with this section and sections 89 and 90.”
“Protective costs orders were developed by the courts, and the principles governing when and on what terms they will be made were re-stated by the Court of Appeal in [Corner House.] The Corner House principles provided for protective costs orders to be for exceptional circumstances in cases concerning issues of public importance. However, over time their use has widened. Sections 88-90 make provision for a codified regime, replacing the regime in case law.”
“In my judgment, the authorities show that, in a claim involving a closed material procedure, the question whether costs should follow the event will depend on the extent to which the success of the winning party was based on CLOSED material. If success was based substantially on CLOSED material, it may be difficult to conclude that the unsuccessful party was at fault in bringing or contesting the proceedings, unless the CLOSED material contains matters known to that party. If, on the other hand, the winning points were substantially OPEN ones, the fact that some CLOSED material was deployed will not stand in the way of an award of costs.”