A withdrawal notice must—
(a) be in writing and contain the prescribed details; and
(b) state that the enforcement agency intends to proceed in respect of the infringement offence by—
(i) continuing proceedings and issuing a summons; or
(ii) issuing an official warning; or
(iii) taking no further action; or
(iv) taking any other specified action permitted under this Act or the Act or regulations which establishes the infringement offence.