Only ACCA and Cima qualified accountants or people with an accounting degree can apply for a skills assessment as an accountant. The full AAT qualification alone isn't enough as it's only NVQ 4, not degree level. I know as I am fully qualified AAT and have worked as an accountant for 20 years and still cannot apply using my skills. The AAT qualification may be able to get you a positive assessment from Vetassess as an office manager which is worth 40 points but then there's the issue of experience in that skill.
Accountant 2211-11 - Australian Skills Recognition Information
Nicky