A view across Poplar Dock (now Poplar Dock Marina). I think the council flats, part of the 'Canadian Estate' built in 1904 by the London County Council, with buildings named Ottawa, Baffin, Ontario, Hudson, Quebec and Winnipeg in the picture have been demolished and replaced by new private properties. All the flats in the old building were built to decent standards for the time, 2 or 3 bed flats with kitchen and inside toilet, and decent sized rooms, probably larger than many in the new developments. There were five floors, with stairs up to balconies running along the length of the buildings at the rear, facing a yard between the two rows of 3 three buildings. I think the one seen here is probably Ottawa Buildings.
 
The chimneys are presumably those of the Blackwall Power Station.