The slide below is taken from presentations I give at both to both service and civilian organisations on aviation safety management. It shows the accident rate since records have begun. There have been significant improvements in civil aviation safety since in 1977 (Teneriffe air disaster), and as a function of passenger miles and deaths per annum, civil air safety continues to improve.
I have my own opinions on the direction Defence should take, and i believe that some of our recent regulatory decisons, post H-C, have not been fully thought through- but look good on paper...