Where—
the applicant for the licence or, as the case may be, the holder or last holder of it may, in accordance with regulations, appeal from the decision in question to the Secretary of State; and where on such an appeal the Secretary of State determines that the decision is to be altered it shall be the duty of the appropriate Agency to give effect to the determination.
While an appeal in pursuance of the preceding subsection is pending in a case falling within paragraph (c) or (d) of that subsection, the decision in question shall, subject to the following subsection, be ineffective; and if the appeal is dismissed or withdrawn the decision shall be effective again from the end of the day on which the appeal is dismissed or withdrawn.
The preceding subsection shall not apply if the decision in question is a decision as respects which the notice relating to the decision which was served on the holder of the relevant licence in pursuance of section 7 or section 9(4)(b) of this Act includes a statement that in the opinion of the body making the decision in question it is necessary for the purpose of preventing pollution of water or danger to public health that the preceding subsection should not apply to the decision; but if on the application of the holder or former holder of the relevant licence the Secretary of State determines that that body acted unreasonably in including such a statement in the said notice, then—
and any dispute as to a person's entitlement to compensation in pursuance of paragraph (b) of this subsection or as to the amount of the compensation shall be determined by arbitration.