(1) The powers conferred by this section may be exercised in respect of an approved professional body or a body which has applied to be an approved professional body, a proposed investment business firm, an authorised investment business firm, an investment business firm or a former authorised investment business firm, or a person whom a supervisory authority has reasonable grounds to believe has provided or is providing investment business services or investment advice, or an associated undertaking or related undertaking and these persons shall be referred to in this section as "persons to whom this section applies".
(2) An authorised officer may, for the purpose of obtaining any information which a supervisory authority may require to enable it to exercise any of its functions under this Act, do any one or more of the following things:
(a) at all reasonable times enter any premises, at which there are reasonable grounds to believe that any investment business service or any acti