I have all mine except one that was stolen in Morocco. That I was very pee'd off about as it it had gems in it, like an Iranian visa and entry/exit stamps that had any mention of the Shah (Imperial) crossed out in biro. We crossed through Iran 2 days after the shah fled and the borders reopened.
It also included, Afghanistan, India, Pakistan and various others as well. I'm still annoyed that I allowed myself to be relieved of it.
I went to the British Consulate in Casablanca as they were the representatives of Australia at the time.
With the agreement of the Australian embassy in Madrid, the British gave me a limited UK passport valid for 3 months to get me to Rome where I had a new Australian one issued. Don't think that would happen now!
I nearly filled up one of my passports on another rather long cross Africa trip, my gf (now my wife) at the time had a Canadian passport which by Nigeria was full, so she had extra pages added. No so for Australians, they would not add extra pages under any circumstances. Fortunately I just made it to the UK and had a new one issued at Australia House.