Millwall FC Tickets Millwall FC: back in England's second tier. Founded in 1885 as Millwall Rovers, Millwall FC is a football club that plays its first team home games at The Den, a 20,000-seater arena in Bermondsey, South London. Visit this link to book child places online for any of the Millwall Football Club Soccer Schools. Millwall FC Soccer School locations: Millwall FC hold soccer schools in the following locations: London