The Grand Junction Canal is a canal in England from Braunston in Northamptonshire to the River Thames at Brentford, with a number of branches. The mainline was built between 1793 and 1805, to improve the route from the Midlands to London, by-passing the upper reaches of the River Thames near Oxford, thus shortening the journey. In 1927 the canal was bought by the Regent's Canal Company and, since 1 January 1929, has formed the southern half of the Grand Union Main Line from London to Birmingham. The canal is now much used by leisure traffic. More information on the Wikipedia page [1].