I return to the point that I have made about the fundamental structure or principles behind the devolution of corporation tax rate-setting powers to Northern Ireland. I have given a fairly lengthy response, because I thought that it was appropriate to put in context the 5% computation in respect of back-office functions. There is the ability to come back to that. As hon. Members are aware, the OECD is looking, as part of the base erosion and profit shifting process, at how much profit can be attributed to back-office functions. If memory serves, it is looking at a range of 2% to 5%, so we are at the upper end of that. There is the ability to make adjustments if there is evidence that there should be a higher mark-up for back-office functions. There is flexibility on that point if the evidence is presented to us and a strong case is made. However, we believe that 5% is the right level.
With that explanation, I hope that the hon. Gentleman can be persuaded to withdraw his amendment. If not, we will oppose it and I will advise my colleagues to vote against it.
1.30 pm