“A useful guide is likely to be provided by ordinary accounting principles, whereby in the absence of some special reason to the contrary the profits of a single project are attributed to different parts or aspects of the project in the same proportions as the costs and expenses are attributed to them.”
“In other words, the distribution of costs approach tells you nothing about weighting, or, to use Millett J’s words, ‘It does not tell you if there are special reasons why even distribution is inappropriate.’ The distribution of costs approach does not set out to distinguish between relatively critical and relatively trivial parts of the whole, but it does provide a measure of the base allocated profits attributable to the part in issue. Any question of weighting the figure up or down if possible is dependent upon taking into account other more nebulous considerations.”