Agriculture in the United Kingdom fund the purchase as a mortgage. The Council could not refuse without the Minister of Agriculture's permission. In 1919 the Board of Agriculture and the Ministry of Food were merged to form the Ministry of Agriculture and Fisheries, which later became the Ministry of Agriculture, Fisheries and Food (MAFF). MAFF was in turn the predecessor of DEFRA. Before the Second World War started, Britain imported 55 million tons of food a year. By the end of 1939, this had dropped to 12 million, and food rationing was introduced at the start of 1940. It did not completely end until July
Rationing the size of the family, ages of children and income. The British Ministry of Food refined the rationing process in the early 1940s to ensure the population did not starve when food imports were severely restricted and local production limited due to the large number of men fighting the war. Rationing on a scientific basis was pioneered by Elsie Widdowson and Robert McCance at the Department of Experimental Medicine, University of Cambridge. They worked on the chemical composition of the human body, and on the nutritional value of different flours used to make bread. Widdowson also studied the impact of