If you are that interested, go and look on the Home Office's immigration web pages. Australians have no more right to live and work in UK (or EU) than Chinese, unless their parents are British (or EU) passport holders. That is because the EU is pretty full, does not (overall) have full employment, and has no real need in most fields of endeavour to import expertise from elsewhere. Australia, which is a growing population and economy in an under-populated area, does require a degree of imported expertise - but, even so, it is very difficult to get in.
Non-national pilots, of whatever qualifications, are only in demand in Asia and the Middle East.
Scroggs