Looks real, doesn't he? But our placard-carrying construction worker is actually a cardboard cutout. He acts as a two-dimensional guard on the eastern fringes of Soho Square, warning pedestrians that none shall pass, thanks to the Crossrail dig by Tottenham Court Road tube.
But that's a boring message, so we've erased it. Your job is to come up with something more humorous or apt. Either leave a comment below with your suggested legend, or doctor the photograph and email it to email@example.com.