I think Australians, in general, don't realise how little the English (and Brits) know or even care about Australia.
Having lived there, you realise how we just aren't a pressing concern for them. Nobody knows who the current PM is, nobody knows much about our culture, let alone our sporting culture.
The majority of discussion would revert back to tropes about convicts etc. Particularly in London there was almost a dismissive air of "another pisshead Aussie" when you spoke to them. Most Aussies, start to effect a southern English accent after a year or so, just to avoid this stereotyping.
Same goes for perception in the rest of the world, obviously.