terminology out break now.
Englishal
FFF is just quoting the lasors
http://www.caa.co.uk/docs/175/SECTION%20H%20.pdf
For the removal of no applied instruments for a FI its 200 hours IFR and if sole reference 1 hour sole reference is counted as 4 hours IFR. This is reduced to 10 sole reference hours if only teaching IMC's
For the IRI its 800 hours IFR and if sole reference 1 hour sole reference is counted as 4 hours IFR.
And you don't need a IRI to teach IR. Its a stand alone rating which only allows you to teach IR. A FI who has thier "no applied instruments restriction" removed can also teach IR as long as they have more than the factored 200 hours IFR.
I haven't heard of any IRI only qualified instructors but I am sure there is one or two out there. All the ones I have seen have done the FI -> FI (no applied instruments removed) -> Multi class rating Instructor -> CPL Instructor -> Then IR instructor.
The only other limit in regards of IFR time is a JAR ops requirment for single crew ops. And these are all JAR rating requirments so in theory they should be the same through out the JAR world.
MJ