If any objection to any draft order is made to the Secretary of State on the ground that the undertaking proposed to be authorised by the order will destroy or injure any building or other object of historical interest, or will injuriously affect any natural scenery, the Secretary of State shall consider such objection, and may, if he thinks fit, refer such objection to the Commissioners, who shall give to those by whom it is made a proper opportunity of being heard in support of it.