It somewhat depends on how much you order. If you're just talking about the price of the fabric, it's cheaper to send to Hong Kong, even though the mill is in England, because you will incur a VAT charge if your delivery address is within the EU. That said, if you're located in Hong Kong and will need to later to ship to the UK, that will be an additional cost. Happy to give a price break down if you PM me, although it's pretty straightforward -- $70/ meter for the summer tweed; $75/ meter for the Fresco; $47 for shipping per package.
$47 per package to Australia. However, if you buy both fabrics, the shipping charge will double, as these are coming to you from separate mills. The $47 shipping fee is flat, so it doesn't matter how much fabric you order.