Nissan Bluebird ??
Don't think I would every describe the Austin 1100 as a 'great car'. It was especially good looking, not particularly well built and not a great technological leap forward. The transverse engine, hydrolastic suspension features had all been tried and tested in the Mini some years earlier.
Agree with Garcon about the XJ6 or SD1, and maybe add the Rover 2000 to that list.
Lotus Seven seems an obvious omission. From a modern(ish) standpoint what about the Sierra RS Cosworth or Escort Cosworth?