“ there must have been a mistake as to an existing fact, including a mistake as to the availability of evidence on a particular matter; the fact or evidence must have been "established", in the sense that it was uncontentious and objectively verifiable; the appellant (or his advisors) must not have been responsible for the mistake; and the mistake must have played a material (though not necessarily decisive) part in the tribunal's reasoning.”
“ [The COM] and [The POM] did attach weight on the security intelligence and deemed that a period in open condition was required to allow for further testing and to evidence a longer period without any negative intelligence ;”