85 I find, therefore, that Tyndall would not have accepted the proposal had these facts been disclosed. Instead, it would have deferred any further assessment of the proposal until the cause of the rectal bleeding had been ascertained. That is clearly the effect of the evidence of Messrs Willison and Hodgson. As Mr Willison said, Tyndall would not have considered whether it would offer cover "until such time as the cause of the bleeding had been investigated and a definite diagnosis made". He also said, and I find, that he would have required the condition to be "fully investigated". He was not asked to explain what he meant by "fully investigated". But I infer from the general tenor of his evidence that Tyndall would have required a thorough examination. This is confirmed by the evidence of Mr Hodgson. His evidence was that, if there had been disclosure of a history of recurrent episodes of rectal bleeding since 1983, Tyndall would have required something more than a superficial examination up to the point of a colonoscopy. I accept that evidence and find that Tyndall would have required the defendant to undergo a colonoscopy or, at least, a sigmoidoscopy. That conclusion is supported by other factors. As the evidence indicates, while rectal bleeding may indicate other conditions, it may also indicate cancer. An underwriter would be clearly aware of that fact. In the particular circumstances of this case, anything less than a sigmoidoscopy or colonoscopy would have been a superficial examination. The most satisfactory test would have been a colonoscopy. In other words, underwriters knew that, while rectal bleeding indicates at least three conditions, that is to say, haemorrhoids, diverticulitis and cancer, cancer is a clearly identifiable risk. It would be a high order of financial folly to issue the policy without requiring a colonoscopy. There are, in short, several factors which point to the desirability of a colonoscopy.