The Leveson Inquiry was established to investigate the British press after it was revealed that the News of the World tabloid newspaper had hacked into the phones of celebrities, politicians, and crime victims to obtain private information. The inquiry is examining the culture, practices and ethics of the British media. Key figures like Hugh Grant, Sienna Miller, and JK Rowling testified about their private information and voicemails being intercepted by tabloid journalists. The inquiry aims to establish new regulations for the press to prevent further invasions of privacy while maintaining press freedom.