Ludgate House Sampson House. 4 122 Leadenhall Street 225 / 737.046 2014 Office City of London Second-tallest building in the City of London. Retrieved b "Elephant and Castle Town Centre Complex - The Skyscraper Center". "500m Isle of Dogs high-rise resi scheme approved Construction Enquirer". 7, st Paul's was the world's tallest structure until 1311, when its height was surpassed by Lincoln Cathedral in Lincoln. Saffron Square 134 / Residential Croydon Two Fifty One* 134 / Residential Elephant Castle Formerly Eileen House. Original scheme approved after public inquiry. Retrieved "The White Tower". "Skyscrapers approved for the Isle of Dogs meaning 1,644 more homes coming to South Quay".