At that time, prisons were profit-making enterprises. Prisoners had to pay for food and lodging. There were fees for turning keys and for taking irons off, and Fleet Prison had the highest fees in England. There was even a grille built into the Farringdon Street prison wall, so that prisoners might beg alms from passers-by. But prisoners did not necessarily have to live within Fleet Prison itself; as long as they paid the keeper to compensate him for loss of earnings, they could take lodgings within a particular area outside the prison walls called the "Liberty of the Fleet" or the "Rules of the Fleet". From 1613 on, there were also many clandestine Fleet Marriages. The boundary of the Liberties of the Fleet included the north side of Ludgate Hill, the Old Bailey to Fleet Lane and along it until the Fleet Market, and ran alongside the prison to Ludgate Hill.