Power to require attendance of witnesses and production of documents
7.—(1) The appointed person may, either of his own motion or on the application of any person entitled or permitted to appear, cause to be served on any person appearing to him to be likely to be able to give material evidence or to produce any document likely to be material evidence, a notice requiring that person to attend at the inquiry at the time and place specified in the notice to give evidence or produce the document.
(2) A person on whom a notice is served under paragraph (1) of this Regulation may apply to the appointed person either at or before the inquiry to vary or set aside the requirement, and where he does so before the inquiry he shall give notice of his application to the person, if any, who applied for the notice under paragraph (1) to be served.
(3) A notice containing a requirement under paragraph (1) of this Regulation shall contain a reference to the fact that under section 33(2) of the 1974 Act a person who contravenes such a requirement is liable on summary conviction to a fine not exceeding £400.
(4) No person shall be required under this Regulation to attend to give evidence or produce any document, unless the necessary expenses of his attendance are paid or tendered to him.