As soon as may be after the making of a representation under this part of this Schedule, the person carrying on the undertaking shall publish, in such form and manner as may be directed by the Secretary of State, a notice giving such particulars as may be so directed of the matters to which the representation relates and specifying the time within which, and the manner in which, objections to the making of an order on the representation may be made, and shall also, if it is so directed by the Secretary of State, serve a like notice on such persons, or persons of such classes, as may be so directed.