The tidal Thames stretches from the sea as far inland as Teddington in Middlesex. Slightly under 100 miles in length, this stretch of river offers a wealth of different scenes - from the almost open sea in the estuary, to the green and leafy islands (or aits as they are known) around Isleworth and Brentford, with industrial London in between. The work is signed 'W L Wyllie', bottom left.