CPR 31.6 outlines the test for standard disclosure, which provides that a party does not have to disclose documents that are or might be 'relevant', but only those documents: • on which they rely • which harm their case • which harm another party's case • which support another party's case However, on occasion, the disclosing party may wish to claim that they have a right or duty to withhold a document, or part of a document, in their list of documents from inspection. If they wish to do so, they must state in writing: • that they have such a right or duty, and • the