There were two people in the room, besides the Conservative operatives. One was Mr. Cadman, the other was his assistant Dan Wallace (nobody disputes this fact). Mrs. Cadman relays what happened, based on what her husband had said. Now, a journalist would look for confirmation, see if Mr. Wallace can collaborate these outlandish accusations. When asked, this was Mr. Wallace's response:
"I believe Dona Cadman as the day is long. She has no interest in fabricating anything"
The second source says you should take Dona Cadman at her word, there is no interest in lying. No clarification, no "I don't recall" any offer, no denial that it happened. All Wallace did was "recoil" at first, when questioned, then he offered support for Dona Cadman. There is no stretch in logic to say that the man in the room at the time confirms Dona Cadman's story.
Maybe Bob Fife could do his job today, instead of wondering aloud about the practicalities of a terminally ill man securing life insurance. The only question relevant, is not whether it was feasible to do so, but was that offer made, by overly zealous Conservative operatives, desperate to get Cadman on side? Fife was embarrassing today, so overt in his personal attempt to kill a story, which he himself hasn't bothered to confirm or dispute, just lazy armchair analysis, which speaks to a disturbing bias.