Masters of the chain gangs

Recent research tells us that the average British shopper is destined to spend two years of his or her life inside a supermarket. Ever since ‘Mr Alan’ Sainsbury, third-generation head of the grocery dynasty, converted his Croydon branch to self-service in 1950 — and despite the fact that one of the first customers threw her wire basket at him in disgust — these cathedrals to consumer choice and convenience have loomed larger and larger in the national landscape.