One Canada Square of London."" One Canada Square was originally designed to be high at 55 storeys, but that penetrated the permitted projection height of the flight obstruction area of the airport approach district to London City Airport, but this was extended to a height of above kerb level in consideration of the fact that One Canada Square was on the external zone of the airport approach. To comply with air traffic safety regulations, the architects took five floors off the tower. The final height of was permitted, otherwise, the developers would have had to dismantle what was necessary to fit the height
King's Building, London King's Building, London The King's Building is a Grade I listed building that forms part of the Strand Campus of King's College London in the United Kingdom. Originally named the College Building, the King's Building was designed by Sir Robert Smirke in the course of the College's foundation in 1829. As the founding building, it was built between 1829 and 1831 on land granted to King's College by the Government to complete the riverside frontage of Somerset House. There are today a total of eight floors in the King's Building: Basement level, Ground level, Levels 1 to 4, Level 4U