Where did they plan to use the Jaguar as a trainer? Was it planned as a Hunter replacement for TWU or after the Gnat?
It was going to replace the Gnat,
AFAIK.
When the first Gnats arrived at Valley I was a stude there on the Vampire. Echoing the comment above about the Gnat in a crosswind, I remember a bar conversation with one of the first Gnat QFIs. Having asked what the new bird was like, the answer was:
"Well, if you have let down through 30,000ft of cloud, seen the lights at minimums, and touched down in the middle of the runway on the crosswind limit, then in most aircraft your problems would be over. With a Gnat, they are just beginning."
I did have a ride in one at Rissy a few months later, and was impressed by its modernity compared with the Vampire T11. All a long time ago...……………..