Prince Harry is set to appear in another documentary, Tabloids on Trial, which this time details his “fight to expose illegal tactics” in the media. The program will hear his side of the story in candid detail and also feature other big names such as Charlotte Church, Hugh Grant and Paul Gascoigne — all of whom were also victims of a widespread phone hacking scandal initiated by certain British tabloids. The Hollywood Reporter has described the doc as a chance for viewers to “hear about his [Harry’s] mission to continue his fight to expose the illegal tactics of Britain’s tabloid press, and ex…