John Purdey
I personally don't subscibe to the conspiricy theory. However,you know what you ask is impossible. If the two AM's did overrule the Board for reasons of National Security then anyone comimg forward would be in breach of the Official Secrets Act.
I believe it comes down to simple economics. Two deceased junior officers have limited estates and are therefore not worth suing.
If however an un - airwothy aircraft was rushed into service and this was found to have "possibly contributed" to the crash, then MOD/HMG would be subject to some serious litigation.
Oh, and someone far more seniors neck would be on the line.