2.48—(1) An agreement for the purposes of section 30(5) of the 1990 Act (agreement to parental order by a father who is not the husband of the female petitioner or by the woman who carried the child) shall, if given in writing, be in Form 23.
(2) An agreement referred to in this rule which is executed furth of Scotland shall be witnessed–
(a)where it is executed in England, Wales or Northern Ireland, by a justice of the peace or commissioner for oaths; or
(b)where it is executed furth of the United Kingdom–
(i)the case of a person who is serving in Her Majesty’s Forces, by an officer holding a commission in those forces; or
(ii)by a British consular official or any person authorised, by the law of the country where the agreement is executed, to administer an oath for any legal purpose.