Our son is planning a trip to Australia either the end of 2023 or 2024. His Australian passport expired last year. He was 13 when he got this one so from reading up on this I know he cannot renew it online, he has to go to the Embassy in London. My question is this. He has booked an appointment in February. Does he now have to do anything else or just go to his appointment, presumably with his passport, other identification documents and his Citizenship Certificate?
Hoping someone can advise. Thanks.