However, as this advert shows from World Stores (who had branches at 50 East Street, Bromley and 41 High Street, Orpington), from the Bromley & District Times on 17th May 1918 (page 6), certain foods did not require a ration card to be purchased.
NO RATION CARD REQUIRED
for any of the the following:- (equal to Meat in food value)
Spaghetti (in tomato sauce) with cheese
Pork and Beans
Pilchards in Tomato Sauce
Best Rolled Oats