A question from a native Londoner:
I know all the main free museums in London (British Museum, National Gallery, National Portrait Gallery, V&A, Science Museum, Natural History Museum, Tate Britain, Tate Modern, V&A Museum of Childhood, Museum of London, Soane Museum, Horniman Museum, Kenwood House). I have checked all the usual websites and have not come up with very much other than the Bank of England Museum and the various museums that are part of University College. Does anybody know of any other free museums that are somewhat off the beaten track? Obviously I am looking for the smaller and more obscure museums, not for the obvious ones that I have already listed.