335.This section establishes wider powers for investigators appointed under section 168(1) or (4), the power to investigate particular suspected contraventions or offences.  It does not, therefore, apply to investigations into possible insider dealing, market abuse, misleading statements and practices or a breach of the general prohibition or the promotional prohibitions.  Because the grounds required under section 168 are more specific, the powers available to the investigator are wider in terms of who may be required to give information. A person who is not the person under investigation or connected to that person may only be asked questions so long as the investigator is satisfied that it is necessary or expedient to do so.  The term “connected” attracts the same meaning as under section 171.
Commentary on Sections Part Xi: Information Gathering & Investigations Section 172: Additional power of persons appointed under section 168(1) or (4)