Sch 20B para 15
(1) This paragraph applies to a person (“P”) who is serving an extended sentence imposed under section 227 or 228 before 14 July 2008. (2) If section 247 (release of prisoner on licence) applies to P, it applies with the following modifications. (3) The Secretary of State must not release P under subsection (2) of that section unless the Board has directed P's release under that subsection. (4) The Board must not give a direction under sub-paragraph (3) unless the Board is satisfied that it is no longer necessary for the protection of the public that the person should be confined. (5) As soon as P has served the appropriate custodial term, the Secretary of State must release P on licence, unless P has previously been recalled under section 254. (6) Paragraphs 38 and 39 contain provision that relates to the Board's function of giving directions under sub-paragraph (4) for the release of a person.