Originally Posted by
possel
That link would have saved me some typing! Your list does not mention the Putnam book, but I guess it's your source too?
I used the Putnam and a few other books and magazines. I haven't kept track of the precise sources unfortunately, so if there are differences, I would need to dig through a couple of publications to find the why.
Edit: '
Stuck on the Drawing Board' has some notes about some of Vickers' unfinished projects as well. The only major difference between the list on my site and the one in Andrews & Morgan's Putnam book is the VC9. I have seen a few references to the Vanguard that called it a VC9 (which may be based on its ICAO type designator, but I can't confirm that) and it fits in the timeline... That's my reasoning.