PrePayMania are offering everyone two free Vodafone PAYG sim cards. No sign up or login required just fill out your name, address and email address and they're yours.
I wouldn't normally post a deal for free sim cards as they're often readily available from various sources online BUT as we all know it often takes a month or longer for them to come - if they even come at all!
However I ordered these on Sunday evening from PrePayMania, they were dispatched on Monday and delivered on Tuesday. Was well impressed as most other companies don't usually prioritise these since they're free.
Don't forget even if you're not on Vodafone, nor planning to switch, the beauty of ordering these is that once you've had them for 12 months you are entitled to free unlocking codes from Vodafone for any locked Vodafone PAYG handset. Which is incredibly handy considering most good deals on PAYG handsets seem to be on Vodafone these days!