News of the World royal phone hacking scandal
A scandal developed in 2005 to 2007 around the interception of voicemail relating to the British royal family by a private investigator working for a News of the World journalist. It formed a prelude to the wider News International phone hacking scandal which developed in 2009 and exploded in 2011, when it became clear that the phone hacking had taken place on a much wider scale.
Source: Wikipedia — News of the World royal phone hacking scandal (CC BY-SA 4.0)