http:/www.irriducibili.eu The Inter City Firm (‘ICF’) is an English football hooligan firm mainly active in the 1970s,1980s and 1990s, associated with West Ham United. The name came from the use of InterCity trains for away games.Copied from the Leeds United Service Crew. One figure associated with the ICF was Cass Pennant, who wrote on football hooliganism in the 1990s and 2000s. He is the subject of the film Cass, which was released on 1 August 2008. In Congratulations You Have Just Met …