Bluefox99 I'm a little confused here. You say:
Having just gone to Flightsafety in the States and had my first MPA endorsed onto my JAA CPL
and:
I already hold all the hours and experience required for licence issue.
Now, as far as I understand it, you need 500 mulit-crew hours on JAR 25 aircraft before you have the hours for licence issue. Once you get the 500 hours, the following LPC can be used as your ATPL LST if your FSI has an appropriate examiner.
Cheers,
Chips