To redeem the latest Groupon vouchers, Groupon will prompt you to enter your discount code at the checkout listed on Ok Voucher Codes. Groupon will validate the voucher code and return the money to you. Be sure to check your cart before checkout and be sure to review the discount code or offers. Second, the brand's website creates special pages to show you how to proceed. Normally, voucher codes will be applied automatically at checkout. Either way, you can always view the promotional codes or the results of the final transaction before authorising your order. Before using Groupon vouchers, keep in mind that many promo codes and discount codes only apply to the first Groupon purchase. Free delivery offer are generally limited to ground transportation within the UK. Unless otherwise noted, these Groupon coupon codes are only available online.