I hope this hasnt been posted before, i have had a look and couldnt find anything.
This deal is for UNLIMITED talk, text, and web for £30 per month with only 30 days required to cancel. This deal is similar to o2's simplicity where you only get the sim and no handset.
The only 'catch' is that all the minutes, texts, and web usage cannot exceed £500. Seems like a reasonable term to me.