(1) Where a person authorises any other person ("the agent") to acquire or dispose of, on his behalf, interests in shares in, or debentures of, a company, he shall secure that the agent notifies him immediately of acquisitions or disposals of interests in such shares or debentures effected by the agent which will or may give rise to any obligation on his part to make a notification under this Chapter with respect to his interest in those shares or debentures.
(2) An obligation to make any notification imposed on any person by this Chapter shall be treated as not being fulfilled unless the notice by means of which it purports to be fulfilled identifies him and gives his address.
(3) Where a person fails to fulfil, within the proper period, an obligation to which he is subject by virtue of section 53, no right or interest of any kind whatsoever in respect of the shares or debentures concerned shall be enforceable by him, whether directly or indirectly, by action or legal proceeding.