No; we will not see disputes, because that is the process we are involved in at the moment, which is to reach an agreement on how all these aspects operate. That is what we are doing. When I say that I am optimistic that we will reach an agreement, that is on the basis of the discussions we have had so far and the issues that remain outstanding.
I will move on to the second leg of the second no-detriment principle, which is to do with taxpayer fairness. Changes in devolved Scottish taxes—for example, income tax—should affect public spending only in Scotland, and vice versa for equivalent taxes in the rest of the UK. What does that mean in practice? It means that taxpayers in Newcastle and Liverpool will not fund even higher levels of public services in Scotland not available to them. The noble and learned Lord, Lord McCluskey, touched on some of these issues in his recent Herald article, which has already been referred to. The other aspect is that Scotland does not inadvertently gain a double benefit, via Barnett consequentials and a fixed proportion of any growth in tax revenues from the rest of the UK.
In conclusion, therefore, in this part of what I intend to say, some block grant adjustment mechanisms work better against different principles, and the UK Government’s approach is to find a mechanism that performs well against all of them. Each principle is not perfectly met in every respect, which is what we are trying to deal with in the negotiations that are going on at the moment.