Australian accent used to sound the same as British to me, but now I can usually tell the difference, because I pay attention when I watch movies and TV shows. And I have to say that I like Australian accent more than British, but still not as much as American.
Mick! I can swear, as well, I had to listen to that recording thrice to make sure it wasn't me and that I wasn't showing the first signs of Alzheimer disease. So I ended up asking meself the same question. I remember registering that Arthur the Rat brogue but I can't remember sending it! Honest mate! The thing about speaking a few languages fluently is that you end up having a native accent all of your own. Nobody in France knows where in France I'm from although I'm often told it's the north of the south or the south of the north. ;-)