 CONT: Pete says the last time West Ham and Millwall played each  other was 10 years previous. Steve tells Matt that he met his sister  Shannon soon after the last fight with the Millwall Firm, which  resulted in the death of Tommys son and Steve leaving the GSE. But  earlier in the movie, Shannon tells Matt that she has not seen him  for 3 years. Matt says that she ran off for England after their  mothers death. This leaves a 7 year difference between the time  Shannon and Steve would have met.