I’ve lived in both the U.K. and Aus (as well as the ME).
Evening TV got me, here we have things like Have I Got News For You to chill out with on a Friday night. Over there it was the Matty Johns Footie Show. Not only was it a lower quality of humour but the host had been involved in a widely publicised sex scandal (he was captain of a rugby team who had all allegedly had group sex with one girl in NZ which she said wasn’t consensual), despite this, he was widely considered to be an Aussie hero.
I was also there when Julia Gillard was running for and became PM. The first female in Aus to do so. The vitriol towards her for being female and daring to run for a position of power was unbelievable, not only in the press but in general conversation. I was living in Sydney and I overheard several comments about not voting for her because how could a childless woman know how to run the country.
The above was 11/12 years ago, so maybe things have progressed.
Good points were, I loved the light in Sydney, seemed so much cleaner and brighter. The centre, around the harbour is beautiful. As are the Northern Beaches such as Bilgola. I felt quite safe walking round the city by myself. I enjoyed skiing in the Snowy Mountains, different scenery than Europe, skiing past the gum trees was beautiful.
I agree with some comments about the Anglo population being cliquey - all my friends were either Aussies who had lived abroad, 1st gen Aussies or other Brits.
There are few decent art and history museums in the large cities. Every 2 years or so, there would be a big Picasso or Monet exhibition but that was it - it doesn’t compare well to even our provincial galleries, such as the Tate in Liverpool. The Justice and Police museum in Circular Quay was good and distinctly Aussie and I always thought that maybe they should have more museums celebrating Aussie history and culture.
As others have said, books and clothing are expensive compared to the U.K..
I enjoyed my time there but prefer living here, in the Northern UK. It just suits me better. Perhaps if I was more sporty, I’d have chosen to settle in Aus because sport is much more central to life there than it is here.