True Spirit 120 £24.98 Very good cooler for the money.
http://www.overclockers.co.uk/showproduct.php?prodid=HS-107-TR&groupid=701&catid=2330&subcat=2352
Macho 120 £29.99 A little more money and little better cooling.
http://www.overclockers.co.uk/showproduct.php?prodid=HS-102-TR&groupid=701&catid=2330&subcat=2352
True Spirit 140 £34.99 Even more money and better cooling. If you choose this one it's 170mm tall so be sure your case is big enough.
http://www.overclockers.co.uk/showproduct.php?prodid=HS-108-TR&groupid=701&catid=2330&subcat=2352
http://www.overclockers.co.uk/showproduct.php?prodid=HS-107-TR&groupid=701&catid=2330&subcat=2352
Macho 120 £29.99 A little more money and little better cooling.
http://www.overclockers.co.uk/showproduct.php?prodid=HS-102-TR&groupid=701&catid=2330&subcat=2352
True Spirit 140 £34.99 Even more money and better cooling. If you choose this one it's 170mm tall so be sure your case is big enough.
http://www.overclockers.co.uk/showproduct.php?prodid=HS-108-TR&groupid=701&catid=2330&subcat=2352