On a brisk Saturday morning the Regent's canal in north London is bustling. Cyclists and joggers zip along the towpath, weaving their way past mothers pushing prams. A pop-up stall sells coffee to bleary-eyed pedestrians. At one of the locks along the waterway, maintenance workers have stopped their work to hold an open day discussing what they are doing to the 200-year-old network. Such activity hints at how canals have, in recent years, become fashionable once again.
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