Hmmm, I got an email from OcUK
"Your order has been shipped" yesterday at 4pm.
Today (It's 2pm here gmt+1) I checked Royal Mail's site, and when I inputted the 13 digit number I got this message:
"Information on your item is not yet available. If the International Signed For® item was posted today please note that the majority of items are tracked during the night. Please try again tomorrow."
The problem is that my item was not posted today but yesterday, hence it should've been tracked during last night...
I hope everything'll turn out OK. This hadn't happened when I bought my x-fi from OcUK - the following day Royal Mail
had information on my item!