Founded in 2012 , the Lionhearts competed in the 2012 -- 13 season of WSB , reaching the quarter - finals where they were defeated by Mexico Guerreros .
The British Lionhearts represent Great Britain in the World Series of Boxing .
Founded in 2012 , the Lionhearts competed in the 2012 -- 13 season of World Series of Boxing , reaching the quarter - finals where they were defeated by Mexico Guerreros .
The British Lionhearts represent Great Britain in the World Series of Boxing .