Sch 17 para 3
(1) The following are designated prosecutors— (a) the Director of Public Prosecutions; (b) the Director of the Serious Fraud Office; (c) any prosecutor designated under this paragraph by an order made by the Secretary of State. (2) A designated prosecutor must exercise personally the power to enter into a DPA and, accordingly, any enactment that enables a function of a designated prosecutor to be exercised by a person other than the prosecutor concerned does not apply. (3) But if the designated prosecutor is unavailable, the power to enter into a DPA may be exercised personally by a person authorised in writing by the designated prosecutor.