You do not mess with the special investigators.
British crime stories tend to be very internal, psychological, claustrophobic, very limited in terms of geography.
A calm environment is for after I finish work.
I just felt from personal observation that there is nothing more dislocated or alienated than a lifelong military person trying to cope in civilian life. It's like two completely separate planets.
Most actors are small, anyway - at least compared to me.
I'm opposed to censorship of any kind, especially by government. But it's plain common sense that producers should target their product with some kind of sensitivity.