Tooley's Boatyard on the Oxford Canal in Banbury claims to be the oldest working dry dock on Britain's inland waterways. As it has been in use since 1790 they probably have a point there. The boatyard has managed to survive the downfall of the canals for commerce and also modern redevelopment to reinvent itself as part of the heritage industry and an important part of Banbury's museum and heritage centre... and continue working on boats of course.