“All that is required is that is has newly appeared to an officer, acting honestly and reasonably, that there is an insufficiency in an assessment.”
“…once the inspector comes to the conclusion that, on the facts which he has discovered, [the taxpayer] has additional income beyond that which he has so far declared to the Inspector, then the usual presumption of continuity will apply. The situation will be presumed to go on until there is some change in the situation, the onus of proof of which is clearly on the taxpayer.”
“In a case where the appellant has not made a return for a period there are no preconditions apart from the time limits to the making of the assessment.”