1. In respect of each quota year, a purchaser shall keep, and retain for the relevant period, records comprising–
(a)details of each producer making deliveries to that purchaser, including–
(i)the name and address of each producer;
(ii)the wholesale quota available to each producer at the beginning and end of each quota year;
(iii)the representative fat content (butterfat base) of the milk delivered by each producer; and
(iv)the total quota available for the purchaser group concerned and weighted butterfat of that quota;
(b)details, in terms of each delivery and each month, of the quantities of milk or milk equivalent which each producer has delivered to that producer;
(c)details of the cumulative total of the quantities delivered to that producer each month by all producers;
(d)details of the average fat content of deliveries per month of each producer;
(e)details of the weighted average fat content of the cumulative total referred to in paragraph (c);
(f)a list of purchasers and other undertakings which deliver treated or processed milk or milk products to that purchaser;
(g)details, in terms of each such purchaser or undertaking and each month, of the quantities delivered to that purchaser by such purchaser or undertaking;
(h)details of the use to which milk and milk equivalent collected from that purchaser has been put;
(i)records of individual deliveries and accompanying collection documents identifying each delivery by producer, purchaser or other undertaking; and
(j)all books, registers, accounts, correspondence, commercial data, vouchers and supporting documents relating to the business activities of that purchaser.