Wendy,
Sounds like you received duff gen from a clerk! You can only log flight time as a Safety Pilot, if you actually have to take over control i.e. the PIC becomes incapacitated and you swap roles. As most of the others have said you cannot log P2 in an aircraft certified for one pilot.
In Beagles case he was a Flight Radiotelephony Operator which according to the ANO is a flight crew member.
In reality you can log anything you like, it just won't count for anything.