The implied undertaking limiting use of documents produced under coercion in litigation is not discharged merely because the documents are marked as exhibits. A party bound by the undertaking may not use the documents themselves outside the litigation without leave, even after they go into evidence, though the party may use information about the documents that has become genuinely public through the court proceedings. Documents created specifically for the litigation (witness statements, interrogatory answers) may be freed from the undertaking once tendered at trial for their intended purpose, but not when tendered only on an interlocutory application for a collateral purpose. An imputed waiver of legal professional privilege can be limited to the purpose of the interlocutory application in which it arose.
The full text is available to signed-in members, including the 49 later cases that cite this judgment.
2 of the 49 citing cases carry a classified treatment. How each court treated it is available to signed-in members.