MJR
You need to fill in the FCL-JAR 10 form. On the reverse of the form it has 25 lines and 8 columns:
Date
Students Name
CAA Ref No (The Students No)
A/C Type
A/C Reg'n
Exercise No.(s)
Signature of Supervising FI
CAA Ref No (The Supervising FI's No)
Trying to find out all the CAA No's causes most people grief, but if you know their names and any other details, Call the CAA they will help you fill in the missing ones.
Hope that's what you wanted to know.
WP