My Lords, I hear what the noble Lord says. I think he would accept that it is a case of defining where there is a competitive market. The point I was making is that I think it would be much more difficult to suggest that there is a single market between Edinburgh and Newcastle in relation to air travel than there is between Bristol and Cardiff. I think that, factually, that must be the case. If you live in a suburb of Edinburgh, I do not think you would lightly consider going to Newcastle to catch a flight whereas, if you live in a suburb of Bristol, you might consider going to Cardiff and vice versa.
However, as I say, that is not the only argument that I am deploying. The point about giving a special tax status to Cardiff is the issue here. The Government cannot subscribe to that. However, we acknowledge that we will revisit air passenger duty at some stage. It may be appropriate to do so and decide how we approach it across the whole country as Brexit approaches, and in the light of decisions made on Heathrow and Gatwick. However, in relation to the specific issue, I am afraid that I cannot give any comfort to noble Lords who want me to move further than I have indicated.