Criminal liability for misstatements in prospectus: authorisers face imprisonment or fine unless materiality or reasonable-belief defences apply. Section 63 imposes criminal liability on persons who authorise a prospectus containing any untrue statement, punishable by imprisonment and/or fine, unless the authorised person proves the statement was immaterial or that he had reasonable ground to believe, and did believe up to the time of issue, that the statement was true; mere consent to an expert's statement or specified consents under the related subsection do not by themselves amount to authorising the issue.