At 14.35 on Tuesday 26 March...

... two police officers come across an upturned bicycle. They inspect it thoroughly. They take detailed notes. The bicycle is between two retail premises. The door to the left leads to an upmarket British cocoa grower and chocolatier. The door to the right leads to an agency recruiting experts worldwide. There is a CCTV camera above them and a photographer across the road.

There is something very funny going on.