art 17 Markets
(1) The operator of the market shall ensure that all sheep and goats attending the market are divided into groups of one or more animals immediately upon their arrival there, and a lot number is allocated to each group. (2) No person shall buy or sell a sheep or goat at a market unless he or she also buys all other animals in the lot to which that sheep or goat belongs. (3) The operator of a market shall ensure that as soon as a sheep or goat has been sold at the market, the movement document described in article 12 is completed. (4) No person shall move a sheep or goat from a market other than to the premises identified in the movement record completed in accordance with paragraph (3) above. (5) The market operator shall ensure that on the day that a sheep or goat is moved from the market, he or she sends a document substantially in the form set out in the Schedule to this Order, specifying the information described in article 12(1) and (2) to the local authority for the area in which the market is situated.