High Quality Content by WIKIPEDIA articles! 8 Canada Square (also known as HSBC Group Head Office, or HSBC Tower) is a skyscraper located at Canary Wharf in London Docklands, Borough of Tower Hamlets. The building serves as the global headquarters for the HSBC Group, the world`s largest company by the Forbes Global 2000 in 2008 and houses around 8,000 staff.