I dont know if anyone is bothered bout these anymore but thought id post some links to free sim cards
Vodafone:
http://shop.vodafone.co.uk/index.cfm?fuseaction=home.viewSimOnlyHomePage
Orange:
http://shop.orange.co.uk/shop/simoffer
Vodafone:
http://shop.vodafone.co.uk/index.cfm?fuseaction=home.viewSimOnlyHomePage
Orange:
http://shop.orange.co.uk/shop/simoffer