Madam Speaker, in answer to the first question, the word “appears” is used, because the only restrictions on Parliament's absolute right to order the production of documents are that those documents be present in Canada, not extraterritorially, and that they exist. That is why they use the word “appears” in the previous sentence.
With respect to the question about the U.K. case, it was a legal opinion issued by Attorney General Geoffrey Cox to the cabinet of then prime minister Theresa May. This was a solicitor-client privilege document. The document was released in full, unredacted, publicly to the House of Commons after the Prime Minister was held in contempt and ordered to hand over the document.