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 him, including—
(i)that producer’s name and address;
(ii)the wholesale quota available to that producer at the beginning and end of each quota year;
(iii)the representative fat content (butterfat base) of the milk delivered by that producer; and
(iv)the total quota available for the purchaser group concerned and the weighted butterfat of that quota;
(b)details, in terms of each delivery and each month, of the quantities of milk or milk products which each producer has delivered to him;
(c)details of the cumulative total of the quantities delivered to him each month by all producers;
(d)details of the average fat content of each producer’s deliveries per month;
(e)details of the weighted average fat content of the cumulative total referred to in sub-paragraph (c);
(f)a list of purchasers and other undertakings which deliver treated or processed milk or milk products to him;
(g)details, in terms of each such purchaser or undertaking and each month, of the quantities delivered to him by that purchaser or undertaking;
(h)details of the use to which milk and milk products collected from him 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 his business activities.