My Lords, I do not necessarily accept that it is unconventional. If this Parliament had decided what it wished to do and dictated the matter to the other realms—that have legitimate interest in who is their head of state—it would not have been consistent with the notion of countries such as Australia and New Zealand being independent from the United Kingdom. It was always anticipated that if there were to be a change, agreement would be reached. However, as I said in an exchange during the first amendment with my noble friend Lord Trefgarne, it was important that we sought to get agreement among all the realms and for the changes to be implemented as appropriate in each country. It would have been wrong if we had dictated what the terms should be. Considerable agreement was reached, which New Zealand was responsible for co-ordinating.
It is not as unprecedented as it sometimes sounds; we agree international treaties which Parliament is then asked to ratify. This is not exactly on the same lines but it is important to have that agreement. At the time, everyone seemed to think it was right to seek agreement and then to put the proposals before Parliament. This is a process which predates this Government and has been going on for some time.