Sea Containers, by Blackfriars Bridge, was covered with the giant picture measuring 100m by 70m and weighing in at nearly two tons. The image was erected by a team of eight people over 45 hours. It is due to remain in place until the end of June. The 'Sea Containers' building was originally built as a hotel in the mid 1970's but opened instead as offices, taking its name from its long term tenants, the 'Sea Containers', a transport and container leasing business. In spring 2011…