12 people were arrested at London Bridge Station on Saturday when "disorder" broke out after the Milwall v Leeds United match.
The 12 arrests at London Bridge were among a total of 23 by British Transport Police in connection with the Milwall fixture.
There was a heavy police presence at London Bridge all day on Saturday as part of Operation Era, a national day of action against football disorder.
"Fans who engage in football disorder on the railways are not welcome on the railways," says Superintendent Andy Ball.
"We will seek banning orders to ensure that ordinary members of the public, along with law-abiding football supporters, can travel on the railway in safety."