The Midlands is a good place to find canals too, since a lot of materials used to be moved around in this way during the early days of the Industrial Revolution. I've seen the ones at Foxton, on the Leicester line of the Grand Union Canal;
en.wikipedia.org/wiki/Foxton_locks
As for the selling off of the assets, if this is true it's a short-sighted measure. As fossil fuels (especially oil) become more expensive, which almost everyone who's studied the subject expects them to over the following years and decades, we're going to need transport options which are more fuel-efficient and barges fall into this category, as this American link shows;
www.scrappy.com/BargePage05.htm