Surprised to not see a voucher submitted on this one. I bought a varsity card after reading about it here.http://www.hotukdeals.com/item/230597/new-08-09-varsity-card-out-today/
Already used it once yesterday for 5% discount.
Card costs £3 delivered, but discounts far outweigh the cost. Good for those non-students who don't have a valid UCAS student card.