2 CONFIDENTIAL U.K. EYES ONLY ANNEX INSTRUCTIONS FOR THE USE OF THE MARKING "U.K. EYES ONLY" The marking "U.K. Eyes Only" should be used on documents which contain information which must not be disclosed to persons of any Commonwealth or Foreign country. 2. Instructions for the marking of envelopes containing such documents are as follows:— (a) The words "U.K. Eyes Only" must never appear on any envelopes. (b) The inner envelopes should be marked "Personal" and addressed either to an officer by name, or to a specific appointment.