Washington, Lincoln, Grant and Hamilton) and names of UK senior politicians on the right (Chatham, Burke, Canning and Bright). This has nothing to do with the BBC. It was put there by the owner of the building, the American businessman Irving T Bush.
I didn't know that Bush has distant Dutch connections. Irving T. Bush's family name comes from Jan Bosch, a native of the Netherlands. He emigrated to New Amsterdam, later to become New York, in 1662.
Irving also built Bush Terminal, which has since been renamed "Industry City. It is a historic shipping, warehousing, and manufacturing complex on the waterfront in the Greenwood Heights neighbourhood of Brooklyn, New York City. More photos on Flickr.