London Hackney Carriage Act 1853

16 Advertising vehicles, &c., prohibited.U.K.

It shall not be lawful for any person to carry about on any carriage or on horseback or on foot, in any thoroughfare or public place within the limits of this Act, to the obstruction or annoyance of the inhabitants or passengers, any picture, placard, notice, or advertisement, whether written, printed, or painted upon or posted or attached to any part of such carriage, or on any board, or otherwise.