The UK, in my opinion, is a totalitarian state and has no pretense to being a free society - so yeah, I don't include it in this set, as you rightfully indicate. Australia is a step above the UK in this respect - as the UK is a highly classist, authoritarian/totalitarian state where a majority of its population live in servitude to feudal lords, it doesn't even pretend to have a Constitution, nor individual rights. Australia does pretend, though, so its just a bit above the UK in that regard ..
I think your phrase "racism is intrinsically encoded in Australian law" accurately describes the legal situation up until the reforms of the 1960s and 1970s. But I'm not convinced it is an accurate description of Australian law in the present-day. Can you give some examples of present-day Australian laws which in your view "intrinsically encode" racism?
Section 25 reads:
"25. Provisions as to races disqualified from voting:
For the purposes of the last section, if by the law of any State all persons of any race are disqualified from voting at elections for the more numerous House of the Parliament of the State, then, in reckoning the number of the people of the State or of the Commonwealth, persons of that race resident in that State shall not be counted."
Section 51 (xxvi) reads:
"51. Legislative powers of the Parliament:
The Parliament shall, subject to this Constitution, have power to make laws for the peace, order, and good government of the Commonwealth with respect to: ... (xxvi) the people of any race for whom it is deemed necessary to make special laws;"
Then, there was the abolishment of ATSIC in 2005, which many in the indigenous community view as a betrayal. Even the UN got involved ..
And .. then there is the Nauru situation. Its essentially a detainment camp for undesirable immigrants, and has recently been removed from public scrutiny by way of being made a military base. Still people suffering in that camp daily, but you won't hear many Australians being too deeply bothered by the fact that their government is running a concentration camp... well, its one of 7 that are in operation, and I can guarantee you they won't get public oversight any time soon.