Part of the canal network in the United Kingdom: sections in the London area are the Regent's Canal and Hertford Union Canal. The Grand Union Canal in England is part of the British canal system. Its main line starts in London and ends in Birmingham, stretching for 137 miles (220 km) with 166 locks.[1] It has arms to places including Leicester, Slough, Aylesbury, Wendover and Northampton.[2] More information on the Wikipedia page [1] .