2. In this Order—
“the Act” means the Police and Criminal Evidence Act 1984;
“DTI investigator” means an officer of the department of the Secretary of State for Trade and Industry or any other person acting on that Secretary of State’s behalf; and
“DTI investigation” means an investigation which relates to a serious arrestable offence or to anything which there are reasonable grounds for suspecting has involved the commission of a serious arrestable offence, conducted by a DTI investigator in the discharge of a duty to investigate offences.