Page 1 of How about a free vodafone sim then...

http://shop.vodafone.co.uk/index.cfm?fuseaction=home.viewpaytsim

The above link takes ya to the vodafone free sim offer. You need to pass the same type of info as the O2 deal, but its for 1 sim only I think. :D

In world of falling fences, who needs Gates!

Saw this last week but the offer was unavailable as there was a fault on the site.

Just tried again for 2 sims and the order went through ok this time.