3Greens,
For your IR, the JAA regs state you can "be issued with a JAR-FCL IR(A) providing requirements of JAR-FCL 1.190 have been met. Applicants must:
1 - undertake IR theoretical knowledge instruction as determined by the Head of Training of an approved training provider, and pass ALL of the JAR-FCL theortical knowledge examinations at IR level. Applicants who have passed JAR-FCL ... examinations at ATPL(A) level are exempt.
2 - Complete an approved IR(A) modular flying training course (IAW Appendix 1 to JAR-FCL 1.205) and pass the IR(A) Skill Test (IAW Appendices 1 and 2 to JAR-FCL 1.210) with a CAA Flight Examiner. ...the holder of an ICAO CPL(A) may have the appropriate course of training reduced by 5 hours."
Also note, you need a JAA-FCL Class 1 medical.
You may get exemptions but check with the CAA (ph +44 1293 567 171). They told me I can get a waiver on my IR, MCC and type rating.
Hope it helps,
Trashy.