“In my judgment, the Defendant is entitled in principle to have an order that it should be paid the costs incurred by it exclusively attributable to defending those parts of the case which have been struck out. It seems to me that this may be a difficult exercise in assessment, but the principle is clear.”
“Where the court orders a party to pay costs subject to detailed assessment, it will order that party to pay a reasonable sum on account of costs, unless there is good reason not to do so.”