The new Hitachi Deskstar 3TB 7K3000 SATA III Hard Drive is £125.87 for those with free delivery from AV Forums or Hexus etc, or £129.86 including next day delivery!!
This is the cheapest I have seen this drive get to. It is currently £125.99 at Overclockers >http://www.overclockers.co.uk/showproduct.php?prodid=HD-075-HI,
but there are a limited amount (8 left) and delivery if you do not get it free with the forums, is £7.25.
Thanks for looking, and this is not a Today Only deal, so will hopefully run for a while at this price :D