Fake Royal Standard China?

Hello!

I have no historical information on this Royal Standard Fine Bone China Tea Set. I don't even know how many peices are missing, only one Tea Cup confirmed. 

I have spent hours combing through images online trying to identify this set without a whisper of luck. The flowers are all Australian Wildflowers so they are not the most common subject of bone china tea sets so I didn't think it would be so hard to identify.

Several of the stamps are smudged and there is a lot of wear on the handles etc so they are either very old, used ferociously or cheap imitations.

Either way they are very sweet but I am hoping someone out there can tell me if the are legitimate or if I can just give them to my niece for tea parties?

Any guidance would be greatly appreciated.

Thank you :0)