Instructions:Enter the code at the checkout. The discount worked on a gift I added too with a clothing order. Details from email:
"Don't forget it's your last chance to get a massive 1/3 off plus free postage here at The Big Discount Store! (Excludes gifts & electricals)
You have only one more week to take advantage of this fantastic offer so get your orders for less while you can...
All you have to do is add any item(s) to your shopping cart...Purchase...Then quote the code 'BACK1' at the checkout and the discount will be shown!
But hurry as this offer ends on Wednesday 27th of January!"