Possibly a bit too obscure to anybody outside the UK.

While the Minor Sporting Event is still on, I'm going to keep doing these specials.

Panel 1: A variety of minifigs are arranged on a baseplate. At the top of the panel is the Sherlock Holmes minifig peering through his magnifying glass.

Caption (top):

Can you help Sherlock find the G4S Olympic security guard in the group of figs below? (Correct answer below)

Caption (bottom):

Answer: No, there isn't one!