who is under supervision in pursuance of the functions of a local authority under paragraph (b)(i), (ii) or (vi) of subsection (1) of section 27 (supervision and care of persons on probation, released from prison etc.) of the Social Work (Scotland) Act 1968 (c.49), or

who has requested, in accordance with paragraph (c) of that subsection, the provision of advice, guidance or assistance by a local authority in pursuance of the authority’s functions under that paragraph.