I have circulated a request to my own address list of ex V Force aircrew, which includes a lot of old Valiant hands, so some personal reminiscences may come from this. As an aside, it as always struck me that quite a number of fatal accidents involving V aircraft occurred when someone was in the 6th seat (or even the 7th in the case of the Vulcan at Luqa in the 1970's). I wonder if anyone has studied this for a possible connection.