Complex sentence: St Saviour's Dock is a small dock on the south bank of the River Thames, London, 420 metres east of Tower Bridge and forms the eastern end of the picturesque and historic embankment that starts at Tower Bridge known as Shad Thames.
Split into simpler sentences: St Saviour's Dock is a small dock in London, England, located on the south bank of the River Thames, 420 metres east of Tower Bridge. It forms the eastern end of the picturesque and historic embankment that starts at Tower Bridge known as Shad Thames.