Authorisation of investigations
4.—(1) This article applies to the investigation of the commission of a qualifying offence by a person acquitted of the qualifying offence in proceedings within article 3(1).
(2) A service policeman may not, for the purposes of investigating the acquitted person’s alleged commission of the qualifying offence, and with or without that person’s consent—
(a)arrest or question him,
(b)search him or premises owned or occupied by him,
(c)search a vehicle owned by him or anything in or on such a vehicle,
(d)seize anything in his possession, or
(e)take his fingerprints or take a sample from him,
unless the Director has given his written consent to the investigation (whether before or after the start of the investigation).
(3) The Director may give such consent only on a written application by a service policeman of or above the rank of commander, lieutenant-colonel or wing-commander.
(4) A service policeman may make an application under paragraph (3) only if—
(a)he is satisfied that new evidence has been obtained which would be relevant to an application under article 8(1) in respect of the qualifying offence; or
(b)he has reasonable grounds for believing that such new evidence is likely to be obtained as a result of the investigation.
(5) The Director may give his consent only if satisfied that—
(a)there is, or there is likely as a result of the investigation to be, sufficient new evidence to warrant the conduct of the investigation; and
(b)it is in the public interest for the investigation to proceed.
(6) In giving his consent, the Director may recommend that the investigation be conducted otherwise than by officers of a specified police force.
(7) This article is subject to article 5.