Possible Clues:

• Member of London's first professional police force
• Old copper arch, way above jogger
• Way in front, athlete 23
• Lawman historically went sober: returns, briefly, drunk
• Policeman found weapon on jogger
• Policeman identified London marathon participant?
• Singular example of the filth of old London
• Ben's new torturer, criminal old law officer
• Law officer bends birch, say, on smuggler. About time!