In Australia, as in its other plants, Cadbury's changed the recipe for milk chocolate by reducing the expensive cocoa butter content and replacing it with palm oil. That ruined the flavour. Australians, and New Zealnder protested by withdrawing purchases. Cadbury's had to return to the original recipe at its Australian plant. However, it did not do the same in its other plants.
Jerry, you should stock up on Cadbury's before you go back to the Old Dart. You could make a fortune selling the real thing.