Of course, the question is who would have put the cameras there? Moriarty’s assassins? The CIA? Mycroft? (Okay, Mycroft’s people). Kitty Riley or one of the other tabloid “journalists?” Molly? (Alright, Molly is probably too sweet and pure to do something like that. She probably doesn’t even look at the Johnlock art.) Irene Adler? (Strong possibility given that she could make money from them on her porn site AND keep an eye on whether Sherlock ever actually has “dinner” while getting a load of eye candy for herself (except she’s gay so she’d probably prefer a camera in Molly’s bedroom…oh, it’s all so confusing).) The folks from New Scotland Yard (whom I’m certain have bets on)? Fan girls?
So many fanfic possibilities, so little time. *heavy sigh*