(1)Where a prospectus has been registered under this Part of this Act in respect of an offer of securities and at any time while an agreement in respect of those securities can be entered into in pursuance of that offer—
(a)there is a significant change affecting any matter contained in the prospectus whose inclusion was required by rules applying to it by virtue of section 162 above or by section 163 above ; or
(b)a significant new matter arises the inclusion of information in respect of which would have been so required if it had arisen when the prospectus was prepared,
the person who delivered the prospectus for registration to the registrar of companies shall deliver to him for registration a supplementary prospectus containing particulars of the change or new matter.
(2)In subsection (1) above " significant " means significant for the purpose of making an informed assessment of the matters mentioned in section 163(1) above.
(3)Where the person who delivered the prospectus for registration is not aware of the change or new matter in question he shall not be under any duty to comply with subsection (1) above unless he is notified of it by a person responsible for the prospectus ; but any person responsible for the prospectus who is aware of such a matter shall be under a duty to give him notice of it.
(4)Subsection (1) above applies also as respects matters contained in a supplementary prospectus previously registered under this section in respect of the securities in question.