 The original flag appears in the canton of the Commissioners' Ensign of the Northern Lighthouse Board.This is the only contemporary official representation of the pre-1801 Union Jack in the United Kingdom and can be seen flying from their George Street headquarters in Edinburgh.This version of the Union Jack is also shown in the canton of the Grand Union Flag (also known as the Congress Flag, the First Navy Ensign, the Cambridge Flag and the Continental Colours), the first widely used flag of the United States, slowly phased out after 1777.