Crossrail Rail Link Construction At London's Canar

The headquarters of HSBC Holdings Plc are seen through the unfinished roof structure of the Canary Wharf Crossrail station during construction in London, U.K., on Friday, Feb. 21, 2014, Employees work on roof structure, An employee stands in a cherry picker as he works on the external facade of the Canary Wharf Crossrail station, near the HQ of HSBC Holdings Plc, left, and the offices of Bank of America Corp., Various shots construction worker working from cherry picker, Low angle view roof structure under construction, A worker carries a broom, Employees fix a panel to the ground Crossrail Rail Link Construction At London's Canar on February 21, 2014 in London, England (Footage by BBV/Getty Images)