Red dye was added to gasoline to detect violations of this policy, (10[1]-5[1])for which the entertainer Ivor Novello was briefly imprisoned. This policy led to the appearance of figures known as “spivs.” (-5[2])Tips for dealing with this policy (10[2])were offered on a radio program hosted (10[1])by Marguerite (-5[1])Patten (-5[2])and named (10[1])for (-5[1])a certain “Front.” This policy resulted (10[1])in the creation of the “National Loaf,” which caused (-5[1])excessive (10[1])flatulence. (10[4])Like (10[2])a similar campaign (10[2])in the United States, (10[1])government (10[2])posters encouraged (10[3])civilians (10[1]-5[1])to “Dig for (10[1])Victory” (10[2]-5[2])in response (10[1])to this policy. The Attlee (10[2])government included bread in a postwar (10[1])expansion (10[2])of this policy, which involved the distribution (10[2])of monthly coupon books. (10[1])For (10[1])10 points, name (10[1])this policy necessitated by shortages caused (10[1])by the (10[1])Battle of the Atlantic in Britain. ■END■ (10[13])