When you register with Snapfish you get 20 free photo prints (6x4).
I got mine within 2 days of ordering.
You will need to pay the 99p postage.
(when checking out do not choose to have the photo's cropped to fit, because they will literally crop them!)
Also try studentbeans.com for more deals alike this. http://www.snapfish.co.uk/snapfishuk/welcome
Hope this helps some people!