Every time the Constable brought in a surveyor, and compared his work to the plan his predecessor had drawn up some decades before, he would discover new nests that had insensibly grown in the corners, as dust-balls under a bed. If he went to eject the people who lived in them, so that he could tear them down, he would be confronted with documents and precedents, showing that those people were not squatters but tenants, and that they’d been paying rent for decades to some other squatter-cum- tenant, who in turn paid rent or performed necessary services for some Corporation or Office or other sui generis queer ancient Entity that claimed long standing or warrant Royal.