How do I redeem a "CV code" or "Credit Voucher" CV or Credit Voucher codes issued by us, can only be redeemed by calling our Contact Centre. They cannot be used online at this time. Related articles I no longer want to travel, can I re-book or get a refund? Can I extend the validity of Credit Voucher issued due to COVID related disruption? Can I request a Credit Voucher to replace a non-refundable ticket due to COVID related disruption? What's the difference between Standard, and Standard Refundable tickets? Will there be a charge if I pay using my credit card?