Nokia giving away a Nokia Lumia 1520 in U.K. only MixRadio contest
To enter the contest, you simply have to install the latest version of MixRadio on your Nokia Lumia handset and answer 5 questions pertaining to the new features found on the service. Some of you might have to like the MixRadio Facebook page before entering the contest, in order for the content you need to enter it to load. You must enter by December 6th to have a chance to win the prize package, so don't delay. Good luck.
source: NokiaMixRadio via WPCentral