1. In respect of each quota year, a purchaser must 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 all the producers who make deliveries to the purchaser and the weighted butterfat of that quota;
(b)details, in terms of each delivery and each month, of the quantities of milk 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 supply 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 supplied 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 supplies and accompanying collection documents identifying each delivery or supply by producer, purchaser or other undertaking; and
(j)all books, registers, accounts, correspondence, commercial data, vouchers and supporting documents relating to his business activities.