The so-called Camden Ripper should never be released from prison, a High Court judge has said.
Anthony Hardy got three life sentences in 2003 for murdering three north London prostitutes to satisfy his "depraved and perverted" cravings.
The case was back in court following changes in the law on setting the minimum period a lifer must serve.
Mr Justice Keith, sitting in London, gave Hardy a whole life order, meaning he will die in jail.
Mr Keith, the original trial judge, said: "I have decided that Hardy should never be released from prison.
"This is one of those exceptionally rare cases in which life should mean life."
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