7.—(1) No person may move a pig off a holding unless it has—
(a)an ear tag with the letters “UK” followed by the herdmark of the holding from which the pig is moved off; or
(b)a tattoo showing that herdmark (with or without the letters “UK”); applied in accordance with article 6.
(2) Subject to the Disease Control (Wales) Order 2003(1) in the case of a market—
(a)a pig may be moved off if it is marked with the herdmark of the holding from which it arrived;
(b)if the pig is not correctly identified in accordance with these Regulations when it arrives at a market its keeper may correct the identification so that it is identified with the herdmark of the holding from which it arrived, but if the keeper does not do so the pig may only be returned to the holding it came from.