In all JAA countries since July 1999.
A long time, but it was even longer that that when I last checked (until the EASA rules...)
FCL.910.FI FI — Restricted privileges
Certainly, but to my understanding this is not a separate rating. You have an FI, you just can't do all kinds of instructing until you have the necessary experience.
Please correct me if I am wrong (and kindly refer me to the relevant part.FCL section).