Fire mark

Fire marks were placed on the outside of buildings to indicate that the property was insured by a specific company. This identification was particularly important in London before the introduction of street numbering in the 1760s. Householders with fire insurance could expect the company to send its 'fire brigade' to put out the fire. Insurance companies often had reciprocal arrangements with each other so that if a fire brigade put out a fire at a house insured by a different company then the brigade's company would be reimbursed. In 1826 an agreement was reached between the Sun Fire office, the Royal Exchange Assurance and the Phoenix Fire Office to combine their brigades under the leadership of one superintendent. This provided the basis for the creation of the London Fire Engine Establishment in 1833.

This fire mark was probably used for promotional purposes in the twentieth century by the London Assurance, an insurance company based on Birchin Lane in the City of London. The company was founded in 1720 and undertook marine, life and fire insurance. On the fire mark Britannia is holding a harp and a spear next to a globe with a shield bearing the arms of the City of London.