Thanks for picking up on some of the issues that I was hinting at and commenting so eloquently Fawkes.
God knows what todays process driven system would have made of Lawrence of Arabia for example.......although I suppose he would be able to "come out" of course.....
You are probably right that the jail relates to the ammunition. Many years ago an ex-Para acquaintance of mine who had joined the Lothian and Borders police decided to liven up a terrorism lecture at Tulliallan Police College by bringing some souvenirs to class, oops
end of a fledgling police career, no jail though !