Hmm not 100% but going on past threads it will be the same. Any UK gas appliances need fittings changed and camping stuff is pretty cheap here.
Our 2 burner stove was $50 plus $30 for a bottle which is around $25 to refill,
Think seriously about your tent too, they are also good prices and much better equipped to deal with Aussie conditions.
Our 4 room 9 berth cost $399 and it's an Oztrail, one of the best brands.