4. After rule 18 of the principal Rules (entitlement of an untried prisoner to wear his own clothing) there is inserted the following rule:—
18A—(1) The Governor may permit a prisoner other than an untried prisoner to wear his own clothing in prison and on those occasions when he is required or permitted to be outside the prison.
(2) In considering whether or not to exercise his discretion in accordance with paragraph (1) above, the Governor shall take into account the matters set out in sub-paragraphs (a) to (d) of rule 18(2) as well as any other matters that appear to him to be relevant.
(3) A permission given by the Governor may be withdrawn at any time if the Governor considers it appropriate.”.