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
5 Canada Square 5 Canada Square 5 Canada Square is a 15-storey, office building in the Canary Wharf financial district development of London, England. 5 Canada Square was completed in 2003. The steel-framed building has an aluminum curtain wall and it features a large atrium on its south side with of floorspace. The principal tenant at 5 Canada Square is the European arm and HQ of Bank of America Securities. The building is used for the bank’s global cash-management business for clients. Credit Suisse also occupies part of the building. In 2003, Royal Bank of Scotland (or RBS) bought 5 Canada Square along