This brick indicates the boundary between a private property and the main road (Highway). These were set in to the pavement to show where a person’s property boundary was and what they were responible for and what the Hertfordshire County Highways were responsible for too. Not many of these exist anymore and therefore must be preserved for posterity just to show what they looked like and how they operated. This particular example set in the pavement on Queen Street, is outside a building used by the Hertfordshire Theatre Schools as a repository.