Lord Justice Pitchford and Mr Justice Simon ruled the anonymity order must be discharged.
The judge said that the course used by David McGreavy's legal advisers when applying for anonymity was "wrong".
The ruling was a victory for the Justice Secretary and national newspaper publishers who all worked together last month, after the Press Association alerted them, to say that the order was legally flawed and was wrong to stop the public from knowing all the facts in the case.
Counsel Guy Vassall-Adams had told the judges that even "the nature of the victims" could not be revealed.
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Dry overnight. Unsettled through rest of the week.
Dry tonight with some patchy fog forming. Showers developing Tuesday.
Janet Ajao said in a statement: "I do not condone his actions nor support the beliefs he held that led to him committing this atrocity."