Lordflasheart - Thanks for your posts. In summary then, relevant risks weren't ALARP, the risk register was pants, and MoD didn't disclose this. That sums up a lot of threads here.
Bob Viking - Having taken MoD's side the coroner was persuaded to change her mind. The successful argument was posted on pprune. It's even in a book. I don't think she worked it out by herself.
If you are aircrew you have a big dog in the fight.