8. Where a decision notice is given following a revision of an earlier decision—E+W+S
(a)made of the authority's own motion which results in a revision of that earlier decision; or
(b)made following an application for a revision in accordance with regulation 4(1)(a) of the Decisions and Appeals Regulations, whether or not resulting in a revision of that earlier decision,
that notice shall, subject to paragraph 6, contain a statement only as to all the matters revised.