Sch 10B para 1
(1) In this Schedule “voucher” means an instrument (in physical or electronic form) in relation to which the following conditions are met. (2) The first condition is that one or more persons are under an obligation to accept the instrument as consideration for the provision of goods or services. (3) The second condition is that either or both of— (a) the goods and services for the provision of which the instrument may be accepted as consideration, and (b) the persons who are under the obligation to accept the instrument as consideration for the provision of goods or services, are limited and are stated on or recorded in the instrument or the terms and conditions governing the use of the instrument. (4) The third condition is that the instrument is transferable by gift (whether or not it is transferable for consideration). (5) The following are not vouchers— (a) an instrument entitling a person to a reduction in the consideration for the provision of goods or services; (b) an instrument functioning as a ticket, for example for travel or for admission to a venue or event; (c) postage stamps.