In a Chronology compiled  for the 2002 Lund Humphries book, written by John Milner, Diana Rowntree recalled, We found a house on the Thames, upstream of Putney Bridge, and turned the attic into a studio.  Its comfort permanently slowed Kenneth's working speed from the swift tempo demanded by one-day forays into distant landscapes.

The Thames provided Rowntree with a steady stream of subjects - views from his window,paintings of  Putney Reach, and night time scenes such as Putney Bridge, Nightpiece, (an example of which is in the Government Art Collection) which, in a twentieth century modernist idiom, recall Whistlers night paintings.