Window bars, do you need them on every window, upstairs too, and what are the measurements between the bars??? Have they got to be fixed outside or inside or is it all down to each of us to decide?

I have been looking at different designs but they all seem too big. What about shutters?? Like they have in France.

Also, for a safety factor, what about getting yourself out of say a burning house and you cannot use the doors? If each window is fitted with bars, you are cooked! Just a thought.