I have heard that the change in rules has something to do with a change in the military rules on "Ownership of risk"
Don't know but you could be right:
https://www.gov.uk/government/public...k-risk-to-life
Glad I'm not an Airship who has to read and comply with all this stuff!
p.s. Anyone inferring that the foregoing would apply in wartime would be very misguided to base their actions upon that misconception