9 In British Association v Nettlefold, the plaintiff company sued the defendant shareholder for a call on partly-paid shares. The defendant alleged that the company was an illegal combination under statute and/or operated illegally under the general law, and that any agreement to pay the call was unenforceable. The defendant, in his particulars, inter alia, alleged that there was an agreement between the plaintiff and a certain European organisation, which regulated their relations and their dealings with the patent of a certain machine; that the plaintiff had granted licences in England for the use of the patented machine; and that the plaintiff and the European organisation had acquired the patent for the purposes of controlling output and prices. By letter dated 25 October, the plaintiff's solicitors wrote to the defendant's solicitors, at the same time as the filing of the plaintiff's affidavit of discovery, and admitted that the plaintiff had possession of the agreement in question, but denied its relevance. Accordingly, the agreement was not discovered. The defendant applied under the equivalent of O 26 r 6 for the production of the agreement, and obtained from the Court of Appeal an order to that effect. The defendant's solicitors then wrote to the plaintiff's solicitors and asked for the production of other documents, including documents associated with the licences with respect to the patent. The plaintiff had, in the meantime, sworn in answer to interrogatories that it had granted licences to various persons in England. The plaintiff refused to accede to the defendant's solicitors request, and, with respect to its answers to interrogatories, contended that it had already disclosed the form of those licences and the persons to whom they had been granted.