Ms Niamh O'Brien:

Any increased costs for airlines can find their way into air fares, ultimately. That is the general position when there are increased costs. The uncertainty is really around the ETS price because we do not know what that is going to be. I think it will fluctuate, so there are some unknowns in this regard. However, the aviation ETS has been operating since, I think, 2012 and it has been working quite well. Obviously, the removal of the free allowances will push up the costs.