Bismark, whether or not Army and Royal Navy Aviation are the centres of good practise that you claim (and I'm afraid that the words stones and glass-houses keep coming to mind), you rather miss the point if you don't mind me saying so.
The crisis in UK Military Aviation Airworthiness Provision is not at single service level, it is at MOD level. If, for instance, a Sea King upgrade involved the substitution, without trials as mandated by the Regs, of High Intensity Strobe Lights in place of the existing Anti Collision Lights by simply swapping the ones for the others then the aircraft as released into Royal Navy Service would be unairworthy thanks to the MOD. That is not a theoretical scenario but an actual one. As a result, in hazy conditions at night pilots found themselves blinded by their own forward HISLs. Some chose to rectify that by switching them off, thus making their aircraft invisible to others closing from ahead. Two such aircraft, in such conditions, collided and seven lives were lost. The inquiry ruled out the HISLs as being a contributory cause! The sooner that airworthiness provision and air accident investigation is wrested away from the MOD and the three Services the better, if only to bring back objectivity into a world that can be very unforgiving to subjective self-confidence!