The United Kingdom’s postal service, Royal Mail, observes its 500th anniversary in 2016. To mark the occasion, the National Postal Museum presents a temporary display of original documents from 1635 and 1840, pivotal years in the expansion and evolution of the country’s postal network. These important documents chronicling postal reform in the United Kingdom are on loan from a private collection. In 1516, King Henry VIII knighted a government clerk named Brian Tuke and gave him the title Governor of the King’s Posts. Sir Brian developed a system of post roads connecting London with the four corners of England. This was a closed system, available only to the king and high-ranking public officials. Its postmen were royal messengers who carried official writs, summonses and orders for the government. Over the next three centuries, however, a series of reforms gradually opened the Royal Mail to public use.