In British fiction when a policeman or other plainclothes official wishes to show their authority, they display something they call a “warrant card”, not a badge as in the United States. Is
![Middlesbrough Borough Police - Middlesbrough Police Warrant Card 1963 - British Police online Museum Middlesbrough Borough Police - Middlesbrough Police Warrant Card 1963 - British Police online Museum](http://www.pmcc-club.co.uk/museum/albums/userpics/10005/brucewarr1.jpg)
Middlesbrough Borough Police - Middlesbrough Police Warrant Card 1963 - British Police online Museum
![Probably the first time the police showing his warrant card in front of cameras, during the 4 months of protests : r/HongKong Probably the first time the police showing his warrant card in front of cameras, during the 4 months of protests : r/HongKong](https://preview.redd.it/mdsx95lxd4s31.png?auto=webp&s=bc240a5c61b220fa3bfb38c5a82692f858dad360)