LIFE magazine and Google Images have teamed up to make millions of archive images available to the public for the first time.
Within this stupendous resource are hidden thousands of pictures of a vanished London. We say 'hidden' because searching for 'London' yields no results. You have to search by narrower terms like 'Trafalgar Square'. The gallery shows our favourite seven, but let us know in the comments if you unearth something special that we missed.