My Lords, in this House I intermittently find that the words of St Augustine come to my mind: “Lord, make me chaste, but not yet”. This is such an occasion and the use of “desirability” raised my interest, as it did of the noble Baroness when she saw it. When the Minister responds to the debate, I would like him to give us one or two examples of what these words might mean. What are,
“reasonable measures to reduce, control or mitigate the adverse environmental effects”,
when aeroplanes have a major adverse effect simply by being aeroplanes? It would be helpful to know just what obligation is meant, whether it be desirability, a duty or whatever, because I am rather unclear what impact any of these statements will have.