PT.3 S.19[NO. 30.] Freedom of Information Act 2014. [2014.] section 9 shall be deemed for the purposes of this Act to have been made upon such expiration and to have been made by a person to whom the relevant functions stood delegated under section 20. (2) Where notice of a decision under section 21 is not given to the person who made the application concerned under that section before the expiration of the period specified in subsection (4) thereof, a decision affirming the decision to which the application relates shall be deemed for the purposes of this Act to have been made upon such expiration. (3) Where a statement under subsection (1) of section 10, or notice of a decision under subsection (4) of that section, is not given to the person who made the application under the said subsection (1) concerned before the expiration of the period specified for that purpose in the said subsection (1) or (4), as the case may be, a decision refusing to grant the application shall be deemed for the purposes of this Act to have been made upon such expiration and to have been made by a person to whom the relevant functions stood delegated under section 20. Delegation of certain functions of heads 20. (1) A head may delegate in writing to a member of the staff of the FOI body concerned any of the functions of the head under this Act (other than this section and section 34). (2) A delegation under subsection (1) (“delegation”) may— (a) relate to functions generally or specified functions or be in respect of records generally or specified classes of records or specified records, and (b) be to a specified member or specified members of the staff of the FOI body concerned or to such members who are of a specified rank or grade or of a rank or grade not lower than a specified rank or grade, and may delegate different functions or classes of function to different such members or classes of members. (3) A delegation may be revoked in whole or in part or amended in writing by the head for the time being of the FOI body concerned. (4) A delegation shall operate, so long as it continues in force, to confer on and vest in the person concerned the function or functions delegated by the delegation. (5) References in this Act to a head shall be construed, where appropriate having regard to the context and any delegation under this section, as including references to any person to whom functions stand delegated by the delegation. CHAPTER 3 Internal Review Review by heads of decisions under Chapters 1 and 2 21. (1) This section applies to a decision made pursuant to this Act by a person to whom the 36