I will take interventions in a moment, but I want to finish this point.
The costs are paid for by taxpayers, and by rate payers in Northern Ireland as much as by anybody else. It is important for us all to remember the fundamental injustice that this unintentional, but none the less very serious, miscalculation has caused. I will go on to talk about what the miscalculation was in a minute, but a number of colleagues want to intervene and I will go to the hon. Member for Strangford first.