Blackfriars Tideway Sewer Construction Cranes with London Skyline On Downcast Day

blackfriars tideway cranes construction sewer architecture river thames city skyline skyscrapers finance locked off london river office st pauls cathedral thames downcast foreshore sky water cityscape outdoors outside daytime nobody no people grey cloudy travel london skyline capital modern urban industry british building 20 seconds or longer barge development economy