Just remember that the US cup is not quite 250ml – about 237ml. So converting from US to either UK/Aust will result in slightly more. Also tablespoon sizes differ from US to UK/Aus.
Best thing is to measure the ingredient cup wise, and keep a record for future reference. The internet does provide volume/weight equivalents especially for cooking.
This website may help – just remember it is US though. http://www.traditionaloven.com/conversions_of_measures/flour_volume_weight.html
cheers
Libby