Section 81 of the Act (supplementary listing particulars) requires an issuer to submit supplementary listing particulars to the FCA for approval if at any time after listing particulars have been submitted to the FCA and before the commencement of dealings in the securities following their admission to the official list:
there is a significant change affecting any matter contained in those particulars the inclusion of which was required by:
a significant new matter arises, the inclusion of information in respect of which would have been so required if it had arisen when the particulars were prepared.
the final terms must be provided to investors and filed with the FCA, and made available to the public, as if the relevant requirements in PRR 3.2, article 21 of the Prospectus Regulation, the PR Regulation and the Prospectus RTS Regulation4 applied to them; and
the listing particulars must disclose the criteria and/or the conditions in accordance with which the above elements will be determined or, in the case of price, the maximum price.