East London mum

Hello all this is my first post after joining this group. My husband is applying for a job in Adelaide which will give the whole family a much better pace of life and be financially better off. My husband, myself and 12 year old son are happy with a potential move but my 16 year old daughter has just started her a levels in London and is less keen. Can anyone explain how this will affect my daughter with her conversion to the Australian system? Bearing in mind she's started A levels in sept 17 and I don't think the equivalent 16 yr old Australians start till ?Feb. If she wants to attend a UK Russell group university will she have finished her A level equivalent course to be able to apply? Thanks