London's Regents Canal is 8.5 miles long, has 13 locks, 7 basins, 50 bridges and 2 tunnels. It was opened on August 1st 1820, and horses pulled barges along it, making deliveries in London until the railways took over. The riverside people regarded the boat people as 'water gypsies', but were friends with the bargees (the working men whose horses pulled the barges), and who had nickmanes like…