If you have an Orange contract phone ready for upgrading any time soon, this might be of benefit to you.
I have been waiting for delivery of a phone since last Friday. I upgraded online and paid extra for a better phone. The phone had not arrived so I phoned Orange. The guy told me that it is best not to upgrade online because the site gets it wrong. I got the phone I wanted free of charge instead of paying the extra £79.99. So I'm happy this afternoon.