@ PN
Re the Victor (and presumably the other "V"s.
There was apparently "shock, horror and cries of blasphemy" at Sir Fred's outfit when a visiting USAF officer (with status) commented that the Victor was a pretty fine aircraft - "But why d'ya build it in a hobbies shop?" - and that was in about 1959/60 ...
Later thoughts (years later, because the jibe still rankles a bit)supposed that if only about 50 were going to be built, "decent" jigs were going to be far too expensive.
Par for the UK industry then ...