s 173 Powers of persons appointed as a result of section 168(2).
(1) Subsections (2) to (4) apply if an investigator considers that any person (“ A ”) is or may be able to give information which is or may be relevant to the investigation. (2) The investigator may require A— (a) to attend before him at a specified time and place and answer questions; or (b) otherwise to provide such information as he may require for the purposes of the investigation. (3) The investigator may also require A to produce at a specified time and place any specified documents or documents of a specified description which appear to the investigator to relate to any matter relevant to the investigation. (4) The investigator may also otherwise require A to give him all assistance in connection with the investigation which A is reasonably able to give. (5) “ Investigator ” means a person appointed under subsection (3) of section 168 (as a result of subsection (2) of that section).