Three order update
Anyone that has ordered with Three, I have just got off the phone to them, if you had troubles on Friday or Saturday it might be worth giving them a call as I had managed to order 5 CONTRACTS over the course of Friday evening and Saturday morning... swiftly cancelled four of those!!
Anyway, she said that although their delivery is due for Friday at the moment, they're not sure when the units are arriving from Apple, so it could be Friday, Saturday, or Monday that they are out for delivery, and they're sent tracked with Royal Mail, so the good thing with that is you'll be able to pick it up from a local depot if you miss the delivery, it can sometimes be a bit harder with the other couriers to get your stuff.
She seemed fairly confident that Three could fulfil the orders up until them in that batch, but probably worth taking that with a pinch of salt... If I've not heard anything about delivery by Friday, I'll give them another call and repost here.