PLEASE READ CAREFULLY, ALREADY POSTED AND SOMEONE EXPIRED, IT DOES WORK AT THE MOMENT.....
TO GET DISCOUNT TYPE AFF48
You can use the code aff48 to get £3 off any price plan you want, not just on the e63 deal. Normally code work only mix and match but with this trick can be used on any phone you want.
First find the phone you want, for example http://threestore.three.co.uk/dealsummary.aspx?offercode=18UT15D115.
Add it to basket,then go back and choose any mix and match 300 plan. Add to basket.
Enter promo code aff49. Then remove the mix and match mobile that you don't want.
And voila' the discounted price is added to order!
This trick can be used for any plan you like.
Don't forget quidco and any other offer available.