JAR-FCL has now been around since 2003 and it doesn't cease to amaze me, how many pilots STILL don't know the regs!
6 PIC hours minimum (can of course be all 12); other, missing, 6 hours CAN be instruction taken, either as a new student or training for another rating. In those cases the instructor is PIC, but you can still log the hours (as non-pic).
Some medicals are 5 years, some two, some one... so as has been said, it has nothing to do with the 5 year validity of your licence!