insert
(2A) If, under subsection (2) (a) (i), the regulator advises the person that the investigation is not complete, the regulator must—
(a) until the investigation is complete, give the person a written update about the investigation at least every 3 months; and
(b) when the investigation is complete, give the person a written notice stating—
(i) whether a prosecution will be brought; and
(ii) if a prosecution will not be brought—the reasons why.