We've known that a pay-as-you-go iPhone 3G plan was in the works at O2 since June, but the carrier has at long last fessed up and provided the formal introduction. The iPhone 3G Pay & Go plan will be live on September 16th, enabling users in the UK to purchase the handset sans contract for £349.99 (8GB) or £399.99 (16GB). Yeah, it's quite a bit more than free on contract, but those prices do include unlimited browsing and WiFi for the first 12 months after the phone is activated. Once that honeymoon ends, you're looking at £10 per month to keep browsing. Also of note, Visual Voicemail is conveniently omitted from Pay & Go phones, but if you're cool with that, you can get going in a fortnight by heading to your local O2, Apple or Carphone Warehouse store.
[Via Stuff, thanks to everyone who sent this in]