Over 1 million pre orders in the UK alone mate and counting...already alot of people won't be able to secure one until well into 2014 unless more consoles come to the UK.
Sony seem to be more focused on the earlier US launch at the moment and plan to have consoles on the shelf to buy there despite the huge demand in pre orders, hopefully they do the same for the UK launch but no word yet and the only way to secure one for certain was to pre order. From what I can gather at the moment EVERY launch day console is sold and only phase 2 shipments are guaranteed before christmas, if you haven't ordered by now you will have a long wait and certainly won't get one until the new year at some point.
You can still get an Xbox One at launch though which says it all about which one is more popular.