Missing some relevant info here:
- The error was that the resolution foundation figure was an estimate for the tax year 2028-29
- The two factors that cancel out in this coming year are the rise in personal tax, combined with the cut to national insurance.
As totally justified as it seems to be in this case, I find the points raised by lawyers about this concerning. Ultimately this is a case of the legislature overruling the judiciary with none of the process that the latter would typically require to make sure it is done properly.
Of course, this is such a gross miscarriage of justice that letting the convictions stand probably did more to undermine faith in the system. But I really wish this could have been sorted out without this breach of separation of powers.