If a person is a participator in two or more oil fields which, in relation to any blended oil, are or are included among the originating fields, then, in accordance with regulations made by the Board, he may make a nomination, having effect with respect to all the originating fields in which he is a participator, of a proposed sale F2... of the blended oil; and the preceding provisions of this Schedule shall have effect in relation to such a nomination subject to such modifications as may be prescribed by regulations made by the Board.

In sub-paragraph (1) above “ blended oil ” and “ the originating fields ” have the same meaning as in section 63 of this Act.