I’ve lived all my life between the two countries, spending significant chunks of time - decades- in each. My experience of Australia is that it’s a harsh culture. Friendly yes, but with a rampaging talk poppy/envy culture and a diminishing of anything remotely intellectual or artistic. Ironically, I think this is why the arts and artists (of all media) are actually so good. They’ve really had to fight for doing their thing.
I prefer living in the UK and specifically England. I’m English by birth and culture. The landscape, the weather (even Sydney was too hot for me eventually) and the acceptance that the job I do, and the profession I work in, are important - world-leading, in fact.
But the ingrained class divide and the imbalance between London and everywhere else, and the weird mix of deference and “up yours” public unruliness and rudeness are baffling and distressing. We are a rich country but there are people in dire poverty, both poverty of resources and poverty of thought and aspiration.
No country is perfect. But UK migrants really need to understand that Australia is not just Britain with better weather. And I don’t even think the weather is better - give me north Lancashire January over a Sydney January any time! But my Sydney friends just think I’m eccentric.