shall notify the appropriate registration officer of any change in his case in the particulars specified as items 1, 3, 5, 6, 7 and 14 in the Schedule hereto, before the expiration of 8 days beginning with that on which the change, or the event occasioning the change, occurs; and

if so required by the appropriate registration officer, shall furnish to that officer by such date as he may specify such information, documents and other particulars (including, where so required, a recent photograph) relating to him which are required by that officer for the purposes of his duties under these Regulations.