The thing is, I will be visiting London from 18th till the 23rd (22nd practically, as I will leave on the 23rd early morning), and am shipping the phone to my friend's current residence in London as I am from Malta and the iPhone is not released here yet!
Do you know if they attempt delivery and no one is at home, whether it is possible to pick it up myself? Also, do you know at what time do they usually deliver?
Once shipped, They will give you a tracking number so you can track where your item is and also it will confirm if it is out for delivery.
I have had my items shipped by UPS in the past, but i also know Apple use UK Mail so not sure who will be delivering yours. I beleive if UPS attempt to deliver they will either come again same day at a later time or next day. UPS also have a base where you can call up and pick up your item but ID is required.
Uk Mail Ive never had a shipement so im unsure, but they will usually leave a card to say no one was home and you may need to call them up for redelivery.
in terms of time they deliver. its normally between 7:30am till 6/8pm I beleive.