A "thorough investigation" was launched after three-week-old Jenson died.
Natalie Putt left the house to buy cigarettes in September 2003 and never returned, inquest hears.
The men’s widows and family members wept uncontrollably in the packed public gallery as the jury returned their verdicts.
Coroner orders spot where nine-year-old died be sealed off to prevent future injuries.
The close protection officer was one of two to give an anonymous account of events.
Sir Craig Mackey defended his decision, telling an inquest he had no protective equipment.
Day four of the inquest heard the on-board defibrillator was not used as it was at the back of the plane.
Inquest to hear how Natasha Ednan-Laperous fell ill on a BA flight to France.
The family of victim Aysha Frade left the court when the video was played.