High Quality Content by WIKIPEDIA articles! One Canada Square (often incorrectly called Canary Wharf, after its location) is a skyscraper in Canary Wharf, London. It was the tallest building in the United Kingdom from 1991 to 2010, standing at 235 metres (770 ft) above ground level and containing 50 storeys. In late 2010, it was surpassed by the Shard London Bridge (completed in July 2012) which stands at 309.6 metres (1,016 ft).