Victorian Police Graffiti on Myddelton Passage, Clerkenwell, London

London, United Kingdom. Although they may be easy to miss, Myddelton Passage in Clerkenwell contains a unique historical record as a series of numbers, letters and dates can be found carved into the brickwork on the left side of the passage, many of which were scratched onto the wall by officers of the London Metropolitan Police. The practice started at some point around the mid to late 19th century and continued until around the time of the First World War, with many of the carvings referring to personal collar numbers and divisions, carved by local Police Constables.