I dropped by the Apple Store Regent Street today and there is no sign of iPhones anywhere in store. The rep told me that there will be a press release and official announcement by Apple UK tomorrow stating that new customers will be able to buy the phones at Apple retail stores. Existing iPhone and O2 Pay Monthly customers will have to go to O2 or CWH stores though, as Apple won't have direct access to the O2 upgrade systems.
He said that O2 stores won't be able to activate the phones, however, but that customers can take their new phones to the Apple Store to get activated. He also said that there
"would be loads" of phones and that there should be no problem picking one up in the morning, including 16GB black.
The new iPhone 3G third party cases will not be available until Friday, however, and will not be sold in O2 stores, meaning that those of us who do not want to get our phones scratched, etc, will have to carry it very carefully to the Apple Store to buy one of the cases on the day!
The O2 at Bond Street station will be open at 7.02am but they do not as yet know how many phones they will have. As the Notting Hill Gate store will be open at 8.02am (the one I was planning to go to), I may decide to head out early to the Bond Street store instead.
As I said, the official announcements will come tomorrow so we should know a lot more then.