Clifford Tucker, 47, who arrived at London Heathrow airport, has not lived in the UK since he was a child.
Immigration Minister Chris Bowen cancelled Mr Tucker's visa after it was found he had breached the Migration Act because he failed a character test.
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Mr Tucker was jailed for 12 years for attempting to murder a policeman in 1983 as a 19-year-old and returned to jail for two years for assaulting another person.
"I've just been dumped in this country here. I have no support here, I have no house here, I have nowhere to go," he told the BBC after arriving in London.
Mr Tucker's family emigrated to Australia when he was six years old, but he never became a citizen.
The federal government has paid for six weeks accommodation for Mr Tucker and given him GBP2500.
