Not sure whether to post this as a deal or not...so putting it in Misc for the moment.
I signed up to the Childcare Voucher scheme at work, and when registering with KiddiVouchers, I noted a section on their website for Discounts. It takes you to the SVM gift card site, where you can purchase gitft cards for many retailers (Argos, BHS, M&S, Sainsburys...etc). However, it offers you a discount off all giftcards.
A handy one could be the Sainsbury's one for example, where you could save 4.5% on your weekly grocery shop by purchasing the giftcard with the 4.5% discount.
I'll pop the available discounts on a pic below.