The fact that the UK Military operates within a single legal system whilst being, in effect, the airline, the ATM provider and the Airport operator as well as the investigator and the regulator should make the task far easier.
The single authority system you quote encourages a closed shop attitude and a "Need to know" culture that drives busloads of reasons out to end-users/operators not to engage in a Just Culture aspiration. It will never realise a safety culture purely because of the lack of independence (and therefore a lack of confidentiality) in any area of any authority.
In fact reading several accident reports since the Nimrod incident it is increasingly apparent that many RAF personnel are quickly learning to "take the 5th" when it comes to accident investigations - and who can "blame" them in the currently vague policy situation?
Chug,
I won't support your campaign then...I'll just jump up on the Bandwagon.