Met Police will deploy 400 officers for the 100th Millwall vs West Ham derby on September 19, their first meeting in 14 yearsSportSep 17 at 3:31 AM – Sep 17 at 3:24 PM4 outletsCBS SportsMillwall vs. West Ham United seen Sep 17 at 2:43 PMEvening StandardWhy do West Ham and Millwall fans hate each other? A history of the 'Dockers Derby' Sep 17 at 3:24 PMMillwall v West Ham: Met to flood south London with 400 police in riot gear amid fears of fan violence Sep 17 at 1:32 PMGoalMillwall vs West Ham: First derby in 14 years marks 100th clash Sep 17 at 3:31 AMThe New York TimesAround 400 police officers to be deployed at Millwall vs West Ham clash on Saturday Sep 17 at 1:43 PM