The submission from the Scottish Environmental Services Association states that, on the question“whether the Bill is consistent with the four principles underlying the Scottish Government’s approach to taxation—certainty, convenience, efficiency and proportionate to the ability to pay— ... the Bill offers the industry little in the way of certainty”.When we put that point to Alistair Brown and Stuart Greig of the bill team last week, Stuart Greig said:“We have asked SESA—it is working on something for us—to identify all the points on which it needs most certainty.