35 A further error of law, it was submitted for CGU before me, was the failure by the Tribunal to determine whether, irrespective of the direct evidence of specific witnesses, the documentary evidence adduced before the Tribunal justified a conclusion that paragraph (b) of the definition of 'Known Circumstance' in clause 12.14 of the policy, properly construed, had been established. The documentary evidence was extensive and included engineering and geological reports, design drawings, file notes, various correspondence between the parties to the original proceedings and other persons, invoices and insurance manuals, proposals and schedules. Mr Donald Peter Haworth was a consulting engineer called as to what a reasonable person in the professional position of the respondent would or should have thought. Evidence was also called by CGU from Ms Nieta Adine Tanian and Ms Dina Reckas, both underwriters. Broadly speaking, they gave evidence as to whether, as underwriters, they would have agreed to underwrite to respondent's risk in light of events, circumstances and knowledge prior to 21 March 2004. Initially Ms Reckas said she would have declined to do so but then said she would have agreed to underwrite the respondent's risk but subject to specific exclusions. Those exclusions are not clear to me, nor is the substance of the evidence of Ms Tanian, but it seems to have been largely consistent with that of Ms Reckas on this point.[21]