nppl instructors
whirlibird makes the valid points.
The tag on the ticket isn't the issue. Of course the standards demanded for the CPL test will ensure a higher standard of flying technique but the CPL course is very narrow in content and the training is really no more than a rehearsal toward the end performance (Skill Test).
The knowledge gained in CPL studies is illuminating, however, I think we all agree, much of it has little relevance to the basics of flying nor backs up the needs of a Flying Instructor.
A PPL should be once more able to become a Flying Instructor albiet with a much higher standard of knowledge than under the old UK system. i.e. exams dedicated to instructing.
If, Say Again Slowly, you didn't learn much more about flying during your FIC course, then I find that very disappointing. Perhaps that indicates that a number of FIC courses require review.