21.—(1) The Secretary of State shall, as soon as practicable after reaching his decision, notify his decision on an appeal, and his reasons for it in writing to—
(a)the appellant and the local planning authority;
(b)all other persons entitled to appear at the inquiry who did appear; and
(c)any other person who, having appeared at the inquiry, has asked to be notified of the decision.
(2) Where a copy of the inspector’s report is not sent with the notification of the decision, the notification shall be accompanied by a statement of his conclusions and of any recommendations made by him, and if a person entitled to be notified of the decision has not received a copy of that report, he shall be supplied with a copy of it on written application to the Secretary of State.
(3) In this rule “report” includes any assessor’s report appended to the inspector’s report but does not include any other documents so appended; but any person who has received a copy of the report may apply to the Secretary of State in writing, within 6 weeks of the date of the Secretary of State’s decision, for an opportunity of inspecting any such documents and the Secretary of State shall give him that opportunity.
(4) Any person applying to the Secretary of State under paragraph (2) shall send his application to the Secretary of State within 4 weeks of the Secretary of State’s determination.