Quite near the end, there is a monochrome sequence as Tom Litten swims across a loch, or a lake, with the sun setting behind him whilst Vaughan Williams’s “…Thomas Tallis” is playing that is simply gorgeous to look at. Indeed, much of this is an attractive watch as this young man swims the waterways of the UK observing and being observed by people, their pets, their children and the wildlife. The photography shows us the litheness of the swimmer as he effortlessly glides through the water as well as also displaying the beauty of the scenery. That’s not a sterile sensation; this scenery is…