Australian Adopters who want to go back to Australia

[blossom101001]

Hi,
My husband and I are thinking of moving home to Australia(we are Australian). We have 2 boys who we adopted in the UK. Do you know what the visa process for them is?
Thanks

Do know when our children were born out side of UK we registered their birth with the British Embassy securing nationality, feel sure same would apply too yourselves would contact Australian Embassy there may be a bi lateral agreement.