The Secretary of State may give directions as to the exercise by the appropriate agency of its powers under sections 127 and 128 above.
Without prejudice to the exercise of the power conferred by subsection (1) above, if on any application under section 127 or 128 above—
and that objection is not withdrawn,
the applicant or the appropriate agency may refer the question in dispute to the Secretary of State.
On a reference under subsection (2) above—
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Any decision of the Secretary of State on a reference under subsection (2) above shall be final; and section 69 above shall apply in relation to the decision on a reference under this section as it applies in relation to a decision on a reference such as is mentioned in subsection (1)(b) of that section, but as if references to the other party were references to the applicant.