After following some of the advice given so far im tempted to go with this Toshiba model:
Toshiba L500-1CQ Laptop
(Intel Core™2 Duo T6600, 3GB, 250GB, 15.6" Screen, Windows 7 Home Premium)
http://direct.tesco.com/q/R.207-4984.aspxWith 10% discount it will be coming in at £404
Can anyone recommend a better Toshiba model for around about the same cost?