There is a television station or channel called BBC 4. On Tuesday next, 5 May 2015, it will broadcast
A two-hour, real-time canal boat journey down one of Britain’s most historic waterways, the Kennet and Avon Canal, from Top Lock in Bath to the Dundas Aqueduct. Using an uninterrupted single shot, the film is a rich and absorbing antidote to the frenetic pace and white noise of modern life.
More info here. I do not know whether folk outwith HM Realm can watch the programme on television or on tinterweb.