Ah, you paid full price for that PSU, see if you can swap it out.
http://www.overclockers.co.uk/showproduct.php?prodid=CA-047-CS&groupid=701&catid=123&subcat=1084
http://www.overclockers.co.uk/showproduct.php?prodid=CA-052-CS&groupid=701&catid=123&subcat=
http://www.overclockers.co.uk/showproduct.php?prodid=CA-047-CS&groupid=701&catid=123&subcat=1084
http://www.overclockers.co.uk/showproduct.php?prodid=CA-052-CS&groupid=701&catid=123&subcat=