Holding the official residence and office of the Prime Minister since 1735, this is probably the best-known address in London.
Having approximately 100 rooms, this large townhouse is divided into private and office parts. If you are curious about its interior, take a look at the virtual tour on the official website of 10 Downing Street. Due to its nature, the complex is not opened to the public. There are policemen guarding the gate 24 hours a day.
Though you may have seen these doors in a number of films (e.g. Love Actually), most of the scenes were filmed in studios.