20.—(1) This rule applies to the assignment of supervision levels other than—
(a)the assignment of high supervision level on reception;
(b)the assignment of a supervision level under rule 18(2); or
(c)the assignment of a supervision level to which rule 21 applies.
(2) Following the assignment of a supervision level to which this rule applies, the Governor must inform the prisoner in writing—
(a)in the case of the assignment of a lower supervision level than that previously assigned, of the reasons why the lower supervision level is appropriate; or
(b)in the case of a review which has resulted in no change of supervision level, of the reasons why a lower supervision level is not appropriate.
(3) Following the assignment of a supervision level to which this rule applies, the Governor must, if asked to do so by the prisoner concerned, but subject to rule 27, provide the prisoner with—
(a)a copy of any document to which the Governor has had regard in reaching the decision; and
(b)a summary of any other information of which the Governor was aware and had regard to in reaching the decision.