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. Please note that Credit Vouchers cannot be used online at this time. Related articles 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? I no longer want to travel, can I re-book or get a refund? I've lost my password Will there be a charge if I pay using my credit card?