You may also wish to change your name on various documents such as examination certificates. All you need do is to write to the examination bodies concerned, enclosing a certified copy of your statutory declaration. There may well be a fee for such a service and you should enquire beforehand.
Some University examination bodies have recently refused to alter the name on the degree certificates of some transsexual people. If this happens, then initially write an appeal to the examinations office, with supporting evidence such as your statutory declaration and doctor’s letter. If again refused, then contact the Lesbian and Gay officer of the students union, who will ensure that you have support when you make a formal appeal to the University Senate body, though it would be surprising if the University insisted upon taking the matter that far.