No voucher code is required.
Stock of the console had been in very short supply at launch, with units seen to be selling for in excess of £600 on eBay. However it now appears that stock is readily available at retailers - so much so that Zavvi has decided to undercut its rivals.
Those who picked up a Day One Edition shouldn't be too upset, however, as the new lower price doesn't include a bundled game.
Sony's PS4 continues to retail at around £350.