Instructions:* some say it also works with Free Delivery code: SHA1 *
Was taken found here:
FULL TERMS & CONDITIONS
* Apologies but Debenhams are unable to deliver to Ireland.
T's and C's
*Items must be purchased in one transaction online. To claim your 20% discount visit debenhams.com and type offer code in the promotional box once you have added the item(s) to your shopping basket. This offer cannot be used in conjunction with any other discount offer, and is only valid on full price merchandise. The discount is not available on handling and delivery charges, selected concessions, Home, Furniture, Electricals, Beauty, Gift Vouchers, Gift Cards, Personalised Wedding Stationery, Wedding Gift lists, Activity Superstore gift experiences, Flowers, Hampers, Wine and Financial Services or in payment of any outstanding balance on your Debenhams account.