LASORS manages to mislead yet again! JAR-FCL 1.335, which is the source document, says:
Before being permitted to begin an approved
course of training for a FI(A) rating an applicant
shall have:
(a) at least a CPL(A) or completed at least
200 hours of flight time of which 150 hours as
pilot-in-command if holding a PPL(A);
(b) met the knowledge requirements for a
CPL(A) as set out in Appendix 1 to JAR-FCL
1.470;
So, to begin the FI(A) course you must either hold the CPL(A) or have 200 hours flight time including 150 hours P1