Great Britain Rowland Hill Plan for Postal ReformGreat Britain Rowland Hill Plan for Postal Reform. In 1837 Sir Rowland Hill published a detailed plan entitled Postal Office Reform Its Importance & Practicability. This incorporated a pre paid uniform change of the One Penny per Half Ounce on letters sent within the United Kingdom. Its adoption on 10th January 1840, thus enabling the introduction of stamps & postal stationery the following 6th May. Letter from Rowland Hill dated March 1837 seeking