This is a question for Ask the Tutor! Whenever you have questions in the future, particularly if it’s a question addressed to me, please post on the appropriate page – I rarely look on the general forum pages.
In answer to your question …… I honestly don’t know! My initial reaction would be to say “international” but I suppose that choice could be influenced by how close Australian law is to English law. In addition, is it your intention to stay in Australia for ever / the long term / until retirement?