And for the CRI:
FCL.905.CRI CRI — Privileges and conditions
(a) The privileges of a CRI are to instruct for:
(1) the issue, revalidation or renewal of a class or type rating for non-complex non-high performance single-pilot aeroplanes, when the privileges sought by the applicant are to fly in single-pilot operations;
but:
(b) The privileges of a CRI are restricted to the class or type of aeroplane in which the instructor assessment of competence was taken. The privileges of the CRI shall be extended to further classes or types when the CRI has completed, within the last 12 months:
(1) 15 hours flight time as PIC on aeroplanes of the applicable class or type of aeroplane;
(2) one training flight from the right hand seat under the supervision of another CRI or FI qualified for that class or type occupying the other pilot’s seat.
So the CRI is more restricted than the FI!