In addition to those situations where the OFT place a requirement on a person to furnish them with information and documents, circumstances might arise where it is proposed to interview someone under caution within the meaning of the Police and Criminal Evidence Act 1984.
This would form part of any investigation with a view to possible criminal proceedings. The significance of these interviews is that the replies may be used in evidence in any subsequent Court proceedings and a failure to mention when questioned something later relied upon in defence might also lead to an inference being drawn.