The Aircrew Regulation 1178/2011 states in Appendix 6 - Modular training courses for the IR (A) — Modular flying training course, that:
2. An applicant for a modular IR(A) course shall be the holder of a PPL(A) or a CPL(A), including the privileges to fly at night.
The regulation only applies to EASA Part-FCL licences so you should hold an EASA PPL.
Hope that helps.
