Mosley became an advocate for tighter press regulation after a 2008 privacy case against the News of the World, which reported that a sex party he admitted attending with five prostitutes was “Nazi-themed”. He received £60,000 damages and blamed publicity surrounding the case for the death the following year of his son Alexander, aged 39, from a drug overdose. Johnson said his motivation when he started his investigation was primarily journalistic but the information he collected is now at the heart of Harry’s privacy case. Harry, 41, John, 78, and Hurley, 60, are among celebrities bringing a privacy claim against...