Surprisingly enough, I was just coming to a similar point. Under the rules currently laid down by European law, the potential for the ring-fencing of slots at Heathrow to protect regional services is covered by the rules on PSOs only. I am afraid, therefore, that the new clause is contrary to EU law because it would override the strict criteria and process by which European Governments are permitted to intervene in route operations. As my hon. Friend said, if the Opposition were serious about the new clause, the repeal or amendment of the European Communities Act would be required.