"According to a UN report the number of people confirmed to have died from friendly fire is around 14 ."

-What report? What were it's parameters? what did it cover?

where's the reference to this very important report?

Not that I'm encouraging you to waste your energy: I once waited well over a year to get a mere glib response from them: think a whole team with a backlog of thousands of criticisms to deal with each. It's a tough life the warehouse office customer service apprenticeship for MI6 but the publicly funded rewards must be great going by the lack of whisteblowing.
-The whole show is merely a publicly funded training scheme for spooks.