London's burial grounds read like a "Who's Who" of British and world history. Key sites and their notable interments:
Monarchs: Elizabeth I, Mary I, Henry III, Edward the Confessor.
Scientists: Isaac Newton, Charles Darwin, Stephen Hawking (ashes).
Writers: Geoffrey Chaucer, Charles Dickens, Rudyard Kipling, Alfred Lord Tennyson.
Others: Laurence Olivier, David Livingstone, William Wilberforce.
Architect: Sir Christopher Wren ("Reader, if you seek his monument, look around").
Artists: J.M.W. Turner, John Constable.
Scientists: Alexander Fleming (penicillin), Sir Alexander Graham Bell.
Heroes: Duke of Wellington, Lord Nelson (crypt).
Karl Marx (East Cemetery).
Douglas Adams (Hitchhiker's Guide).
George Eliot (Mary Ann Evans).
Michael Faraday, Christina Rossetti, Lucian Freud.
Isambard Kingdom Brunel (engineer).
William Makepeace Thackeray, Anthony Trollope (novelists).
Lord Byron's wife (Annabella), Princess Sophia (George III's daughter).
Emmeline Pankhurst (suffragette).
John Snow (cholera epidemiology).
Beatrix Potter (ashes), Samuel Coleridge-Taylor (composer).
Joseph Bazalgette (London sewers).
John Rennie (engineer).
John Everett Millais (Pre-Raphaelite).
Executed royalty/prisoners: Anne Boleyn, Catherine Howard, Lady Jane Grey, Thomas More, Thomas Cromwell, Guy Fawkes.
Many cemeteries offer guided tours. Highgate (East) requires booking. All are reachable by Tube/Overground.