London in fiction
A number of books, films, etc. mention London, the capital of the United Kingdom. These include:
Jeeves and Wooster novels - Wooster mainly lives in London and the Drones Club is there too.
Several nursery rhymes mention places in London. London Bridge is obviously mentioned in London Bridge Is Falling Down. Oranges and Lemons mentions several London Churches. One version of Pop Goes The Weasel refers to the Eagle pub on the City Road.
Literature
Harry Potter
Harry Potter, the hidden Diagon Alley and Platform 9 3/4.
Mary Poppins
Mary Poppins takes place on Cherry Tree Lane and at the Bank of England.
Sherlock Holmes
Sherlock Holmes stories-as well as 221B Baker Street-a fictional address since Baker Street was much shorter in Victorian times, the Docklands area plays a large part in The Sign of Four.
Dracula
Dracula moves in London in order to seduce Mina Harker.
Neverwhere
Neil Gaimans Neverwhere is set partly in real London, and partly in an alternative London.
Movies
See also Harry Potter, Mary Poppins, Sherlock Holmes.