This seems to be the sexiest price around at the moment, specifically £469.99 SIM free from mobilephonesdirect.co.uk.
Samsung Galaxy Note 4 specs include a 5.7in QHD display, Qualcomm Snapdragon 805 processor, 3GB of RAM, 16MP rear camera with optical image stabilisation (OIS), 3.7MP front camera, 32GB expandable storage, 3,220mAh battery, and enhanced S Pen. Best phone money can buy? Quite possibly!
(Thanks to myamanuk at HUKD)