The Union of the Crowns took place in 1603 and on 5 May a public postal system was set up between Berwick, just south of the Scottish border, and Edinburgh.
of the Scottish Parliament it ratifies his appointment for life as "His Majesty's cheefe post maister of all his Hienes postmaisteres ..." at a salary of £500 per annum.
[2]: 22 Following the 1660 restoration of the monarchy, one Patrick Grahame became Postmaster General for Scotland under the Privy Seal of King Charles II from 14 September 1662 for his lifetime at the same salary of £500 per annum: officium precipui magistri cursoris lie Postmaster-Generall et Censoris omnium cursorum dicti regni Scotie.
[5]: 4–5 Grahame's son John obtained the position after his father's death in 1674 at a new salary of £1,000 per annum and held the office until 1689.
In August 1695 an act of William III, the Post Office Act 1695 (c. 31), again established a General Post Office in Scotland to be set up in Edinburgh: from whence all letters and pacquets whatsoever may with speed and expedition sent into any part of the kingdom, or any other of his Majesty's dominions, or into any kingdom or country beyond seas, by the pacquest sealed to London.