The document discusses three British film production and distribution companies involved in horror films between the 1950s-1970s: Hammer Film Productions, known for gothic horrors from the 1950s-1970s; Amicus Productions, which produced films from 1962-1977 and distributed one called "Daleks' Invasion Earth 2150 A.D." in 1966; and Tigon British Film Productions, founded in 1966 and producing horrors from 1968-1972 while also distributing three films between 1971-1975.