7:02 AM, Fulham Broadway, SW6

A young Asian man boards the bus and sits down. Garment by garment, his clothes are of a smart style: black wool overcoat, grey pin-stripe trousers, grey towelling socks, and tan shoes. His general appearance, however, is somewhat dishevelled. He opens a small textbook on his lap and begins to read the first topic: Indications for and techniques of urethral catheterization.