Thanks everyone. Yes, its very interesting that the EU and UK have higher standards than us - especially as the Dept Transport Secretary says finalising a 'aviation regulatory harmonisation' with the EU is a current priority - within 12 months
It makes it a very interesting time and potential for some major improvements across a range of areas including crew ratios and pilot flying time.
Starting the research about the 'harmonisation' I was worried about declining standards, until I discovered all of this information.
Its very interesting to learn that mock evacuations are done less often than in stagnant buildings. However did CASA get the suffix 'Safety Authority' ?