In the midst of Britain's unparalleled prosperity, many thousands of low-income families have never had it so bad. These are the "decent, ordinary people," in the words of one social worker, "whose only problem is that they can't find a front door."
In London alone, seven families each day become officially homeless, and the rate is rising. Most often the victims are young couples with several children. Landlords can rent single rooms most profitably to childless tenants, and even for a dingy, three-room basement apartment without private bath or kitchen can usually get far more than a working-class family can afford:...