I think he left around 4.30/5 ? I went to see a friend and he was leaving as I went there.
I went straight to his desk at 16:10 after his photoshoot to be told the staff clearing his desk of photos and was told he had already left to catch his plane, I'm gonna be seriously miffed if that wasn't true...
He did indeed leave straight after his photo shoot, he wanted to leave earlier for his flight but stuck with it due to his photo shoot and not wanting to let people down.
Ah I definitely got my timings wrong then!