Can I use M&S credit card loyalty vouchers online?
Loyalty reward vouchers or bonus points vouchers that can be used online will show an online code on the front of the voucher. When you reach the payment page of the checkout, you’ll have the option to enter a promotion or loyalty code. Enter your loyalty code in the box and click ‘Apply’. The code will be applied to your order, but if your voucher is for extra loyalty points, they may not show in your shopping bag. The points will be added to your account and will be shown on your next loyalty statement.
For further information see terms and conditions on marksandspencer.com. © 2017 Marks and Spencer plc