In 1793, in addition to the numerous receiving houses where letters for the penny post might be taken in, there were in London five principal offices--one known as the chief Penny Post Office, and situated in Throgmorton Street, opposite Bartholomew Lane; another called the Westminster Penny Post Office, and situated in Coventry Street, Haymarket; a third, the Hermitage Office in Queen Street, Little Tower Hill; a fourth, the Southwark Office in St. Saviour's Churchyard, Borough; and a fifth, the St. Clement's Office, in Blackmore Street. Between these five offices there was little or no connection; at no two of them were the number of collections or deliveries the same or the hours at which they were made; the letter-carriers were altogether too few for the ground which they had to cover, so that punctuality and despatch were impossible; and even those whose walks lay near the ten-mile limit, before proceeding to deliver their letters, had to come to London to fetch them. Johnson proposed to change all this. He proposed to reduce the number of principal offices from five to two, retaining only the chief office and the office in Coventry Street; to increase the number of collections and deliveries; to give the same number to all parts served by the penny post, namely, six in the town and three in the suburbs, or, as the suburbs were then called, "the country," and everywhere, as far as possible, to observe the same hours; to post these hours up in every receiving house, so that the public might be made acquainted with them and act as a check upon their being observed; and, instead of requiring the letter-carriers in the remoter parts to come to London for their letters, to send their letters to them by mounted messengers.