"WHEREAS the people of New South Wales, Victoria, South Australia, Queensland, and Tasmania, humbly relying on the blessing of Almighty God, have agreed to unite in one indissoluble Federal Commonwealth under the Crown of the United Kingdom of Great Britain and Ireland, and under the Constitution hereby established:" - from the preamble of the Australian Constitution - don't get much more British than that.
So you have British style government, you speak with a British accent, and you do British things. Driving on the left side of the road is a British thing. Another British thing is the rabid anti Americanism that Americans are subject to from Australians. Like whining about Tesla when they fail to supply you with the models that you somehow believe that you are entitled to.
So, if it quacks like a duck and waddles like a duck ...