[3] The Damned, having scheduled a different opening act for their tour, were not expecting their arrival, but the Misfits were added to the bill nonetheless.

[3][4] This was followed by the arrest of Misfits vocalist Glenn Danzig and then-Misfits guitarist Bobby Steele, who had been involved in a fight with a group of skinheads at the Rainbow Theatre in London on December 2, 1979.

[5][6] Danzig and Steele spent two nights in jail in Brixton, England, which inspired them to create the song "London Dungeon".

[5] The title of the EP was derived from a series of road signs that the Misfits had come across while in London, which read "Beware Bollards".

[5] Originally planned as a record that the Misfits could bring with them on their tour with the Damned (they were not able to do so, as the cover artwork had not been completed in time),[5] Beware combined songs from the Misfits' previously issued singles "Bullet" and "Horror Business", except the latter's track "Children in Heat" was replaced by the song "Last Caress", which had never been released prior to Beware.