If you already saw Green Street Hooligans (Suggestion Nr. 13) then you made your first contact with the ICF (GSE in the movie).
The movie’s firm name eludes to the street in which West Hams stadium, Boleyn Grounds, is located at.
The Inter City Firm (ICF) is an English football hooligan firm mainly active in the 1970s, 1980s and early 1990s, associated with West Ham United and widely regarded as the first properly organized hooligan firm. The name came from the use of InterCity trains to travel to away matches.
As seen in the movie, West Ham United’s main rivalry is Millwall FC. Their firm is the Millwall Bushwhackers.
As one of the most feared firms in football, the Inter City Firm was famous for leaving a calling card on their victim that read “Congratulations you have just met the ICF”, a phrase which later named a book written by Cass Pennant, the leader of the ICF. Cass Pennant has also had a biographical movie made about his life entitled Cass.
Forever blowing bubbles – West Ham United Anthem:
I’m forever blowing bubble, Pretty bubbles in the air
They fly so high, nearly reach the sky
Then like my dreams, they fade and die
Fortune’s always hiding
I’ve looked everywhere
I’m forever blowing bubbles
Pretty bubbles in the air