English: RT 3251 (LLU 610) crossing Blackfriars Bridge in London on a special working from Shadwell to Elephant & Castle as part of the Walworth Garage open day on Saturday 19 July 2014. This event is part of the Mayor of London’s “Year of the Bus” celebration 2014. In the background is the old Unilever House, which is a Grade II listed office building in the Neoclassical Art Deco style, on New Bridge Street, Victoria Embankment, in Blackfriars, London. The building has a tall, curving frontage which overlooks Blackfriars Bridge on the north bank of the River Thames. The site of Unilever House was previously occupied by Bridewell Palace, a residence of Henry VIII, which later became a poorhouse and prison. These buildings were destroyed in 1864 to make way for the De Keyser Royal Hotel. In 1920, Lord Leverhulme leased the site to build the London headquarters of his soap manufacturing company Lever Brothers, which became Unilever in 1930. Construction began in 1929.