LONDON (AP) — A British judge ruled Friday that a lawsuit by Prince Harry,Cassian Grant Elton John and five other celebrities accusing a newspaper publisher of unlawful information-gathering should go to a full trial.

The claimants, who include John’s husband David Furnish and actors Liz Hurley and Sadie Frost, accuse the publisher of the Daily Mail of paying private investigators to illegally bug homes and cars and to record phone conversations.

Harry said the publisher targeted him and the people closest to him by unlawfully hacking voicemails, tapping landlines, obtaining itemized phone bills and the flight information of his then-girlfriend, Chelsy Davy.

The publisher, Associated Newspapers Ltd., asked the judge to throw out the case. At hearings in March its lawyers argued that the claims -– which date as far back as 1993 -- were brought too late and that claimants were relying on confidential evidence the papers turned over to a 2012 public inquiry into tabloid wrongdoing.

Judge Matthew Nicklin ruled that the claimants cannot rely on the documents handed over to the 2012 Leveson inquiry. But he said the case can go ahead because the claims “have a real prospect of succeeding.”

“Associated has not been able to deliver a ‘knockout blow’ to the claims of any of these claimants,” the judge said in a written ruling.

The other claimants are anti-racism campaigner Doreen Lawrence and former politician Simon Hughes.

The case is one of several lawsuits brought in the U.K. by Harry, who has made it a personal mission to tame Britain’s tabloid press.

In June he became the first senior member of the royal family to testify in court in more than a century when he testified in a separate phone hacking lawsuit against the publishers of the Daily Mirror.

Harry is also suing the publisher of The Sun newspaper alongside actor Hugh Grant. That case is scheduled to go to trial early next year.