Project Skylines 160 / Tallest of the proposed buildings of scheme on the Isle of Dogs. Retrieved "Southbank Place-4 Casson Square - The Skyscraper Center". Name Height m / ft Floors* Year' Notes London Millennium Tower London Bridge Tower (Old Design) The Spark Plug (Battersea Eco-tower) Minerva Building Columbus Tower (London) Proposal replaced by Hertsmere House Elephant Castle, Tower One Lansdowne Road Tower 1 224 / Approved 2012. If counting the tallest habitable floors in buildings, then the record would be held between 19 by the Shell Centre, at 107 metres (351 ft) and having 26 floors; and before it by the Victoria Tower.5 metres (323 ft completed in 1858 and having. Retrieved 24 February 2017.