Which passport?

So I became an Aussie citizen earlier this year but haven't yet applied for my Aussie passport.

if I travel out of the country on my uk passport do I need to update my visa/citizenship info with anyone? Or will my uk passport identify me as a dual citizen?

Or am I better to make sure I get an Aussie passport to avoid any confusion?

You need an Aussie passport to enter Aus once you are a citizen.

Once you become a citizen your visa is expired/irrelevant and you cannot leave/enter on it!

Aussie passport are easy to apply for and around $300 if I remember right!

Dan

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What ScooterDan said.

You no longer have a visa, you are an Aus citizen. You will need an Aus passport to depart and enter Aus.

Its pretty straightforward to get sorted and should only take a few weeks to come back.