Mad Jock: do you have any experience flying under FAA rules? The entire world does not operate on JAA rules. Refer to 14 CFR 61.51 "Pilot Logbooks".
(e) Logging pilot-in-command flight time. (1) A sport, recreational, private, or commercial pilot may log pilot-in-command time only for that flight time during which that person—
(i) Is the sole manipulator of the controls of an aircraft for which the pilot is rated or has privileges;
[...]
(3) An authorized instructor may log as pilot-in-command time all flight time while acting as an authorized instructor.
And, if I might add: I worked as a flight instructor in the US under FAA regulations for about 1500hrs, finishing 36 students. That includes quality checking their documentation and paperwork. Neither any pilot examiner nor the FAA (through the FSDO, who came to do checkrides every so often) had any problem with this interpretation, which seemed to be the norm for everyone.