Prince Harry, who has sued the Associated Newspapers group, which owns the Daily Mail, along with other celebrities, for breach of privacy, appeared at the High Court in London today.

Harry arrived in London from California, USA, to testify against the British newspaper, which he accuses of wiretapping and other illegal privacy tactics.

Along with Harry, Elton John and Baroness Doreen Lawrence have also filed suit.

Lawyers for the group of plaintiffs issued a statement last year claiming they have “indispensable and highly disturbing evidence” that they have been victims of “heinous criminal activity and egregious violations of privacy” by the newspaper group.

The charges relate to the publisher of the Mail, Mail on Sunday and MailOnline.