Hi there. Well, there is really no such thing as uniform British accent or a uniform Australian accent. The following website has English speakers from all around the world recite the following paragraph:
"Please call Stella. Ask her to bring these things with her from the store: Six spoons of fresh snow peas, five thick slabs of blue cheese, and maybe a snack for her brother Bob. We also need a small plastic snake and a big toy frog for the kids. She can scoop these things into three red bags, and we will go meet her Wednesday at the train station."
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You can hear the difference.
Source(s):
http://accent.gmu.edu/browse_atlas.php