Found in a newspaper from 1943. Imagine trying to keep track of all those coupons. Pictured below are ration books my parents saved, and some loose coupons. There's even a sugar ration book for me, and I was born in mid-1946 (sugar rationing persisted until 1947).
For those interested in this subject matter I would highly recommend the book Austerity Britain 1945-1951.