(1) Subject to subsections (2) and (3), the Secretary of State may give a direction which-
(a) specifies any overseas proceedings or any description of overseas proceedings; and
(b) prohibits the making of any relevant disclosure for the purposes of those proceedings or, as the case may be, of proceedings of that description.
(2) In subsection (1) the reference, in relation to a direction, to a relevant disclosure is a reference to a disclosure authorised by any of the provisions to which section 17 applies which-
(a) is made for a purpose mentioned in subsection (2)(a) to (d) of that section; and
(b) is a disclosure of any such information as is described in the direction.
(3) The Secretary of State shall not give a direction under this section unless it appears to him that the overseas proceedings in question, or that overseas proceedings of the description in question, relate or would relate-
(a) to a matter in respect of which it would be more appropriate for any jurisdiction or in
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