I just got my first smartphone/PDA today and it's a SPV M700 on orange... i did some research online and went into the shop as needed a new phone in a rush, so thought the shop was the best effort at next day phone deal. I asked in-store about the £8 30 MB bundle and the store reps knew absolutely nothing about it and the magazines/catalogues in-store did not have it listed at all!
anyway long story short, they phone up customer services and they just tack it onto the contract (don't know about PAYG) at £8 monthly. It's ideal for picking up emails and some light web browsing but noone could tell me what happened if i was to go over the 30MB limit.... not ideal but went for it anyway!! i have only had it a day so i'll post back in a week ro so when i get some use on it.