John Purdey
I read the posts you referred to. I thought tecumseh's reply was very clear and concise.
Perhaps you could clarify what you mean by "deliberately concealing their failings"? If you are referring to concealing problems with the aircraft before releasing it to the RAF, can you confirm if the release document passes on the warning from Boscombe Down that the software was dangerous and therefore the aircraft should not be flown? I assume the fact Boscombe made these statements is not disputed. Therefore, if they are not in the release paper, then they have been withheld or concealed. This would seem a simple point to prove or disprove what you claim but I'm sorry if I've missed something.