There is a growing number of miniature football figure suppliers around the world. Some manufacturers offer lead figurines, and other figures are plastic. Below are links provided by ‘Striker’ customers who have used these suppliers to field their own teams for use with the ‘Striker’ rules.
Eureka
http://eurekamin.com.au/product_info.php?products_id=9466
25mm Soccer miniatures
https://www.facebook.com/25mmSoccerFiguresGoldenGoal/?hc_ref=PAGES_TIMELINE&hc_location=ufi
Subbuteoworld
http://www.subbuteoworld.co.uk/subbuteo-accessories/u-paint-teams-figures/