# The Prison (Amendment) (No. 2) Rules 1993, Paragraph 2


For rule 37A there shall be substituted the following—
“Correspondence with legal advisers and courts
37A (1) A prisoner may correspond with his legal adviser and any court and such correspondence may only be opened, read or stopped by the governor in accordance with the provisions of this rule.
(2) Correspondence to which this rule applies may be opened if the governor has reasonable cause to believe that it contains an illicit enclosure and any such enclosure shall be dealt with in accordance with the other provisions of these Rules.
(3) Correspondence to which this rule applies may be opened, read and stopped if the governor has reasonable cause to believe its contents endanger prison security or the safety of others or are otherwise of a criminal nature.
(4) A prisoner shall be given the opportunity to be present when any correspondence to which this rule applies is opened and shall be informed if it or any enclosure is to be read or stopped.
(5) A prisoner shall on request be provided with any writing materials necessary for the purposes of paragraph (1) of this rule.
(6) In this rule, “court” includes the European Commission of Human Rights, the European Court of Human Rights and the European Court of Justice; and “illicit enclosure” includes any article possession of which has not been authorised in accordance with the other provisions of these Rules and any correspondence to or from a person other than the prisoner concerned, his legal adviser or a court.”.

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Source: https://www.legislation.gov.uk/uksi/1993/3075/schedule/paragraph/2 (the official version)
Page: https://openlegislation.uk/prison-amendment-no-2-rules-1993/schedule/paragraph-2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.