4.—(1) A person shall not under paragraph 2 or 3 be required to disclose any information or produce any document which he would be entitled to refuse to disclose or produce on grounds of legal professional privilege in proceedings in the High Court except that a lawyer may be required to furnish the name and address of his client.
(2) A person need not comply with any requirement imposed by a financial investigator under paragraph 2 or 3 unless the investigator has, if required to do so, produced evidence of his authority, and that evidence need not identify him by name if it contains other means of identification.