An ex-Clarence House press chief told the trial of The Sun's royal editor that some of the stories to come out of Sandhurst about Princes William and Harry were "intrusive". (Picture: Reuters)

Former communications secretary Paddy Harverson said while The Sun's coverage was "generally" positive about the young princes' performance during their officer cadet training, it was "important to remember" some stories "should have been private".

Sun journalist Duncan Larcombe is on trial at the Old Bailey over payments to ex-Sandhurst Royal Military Academy instructor John Hardy for story tips and photos while Harry and William were officer cadets.