Oswald Rayner

Oswald Theodore Rayner was a British Secret Intelligence Service (MI6) field agent who operated covertly in the Russian Empire during the First World War. He is believed by some to have been involved in the final murder plot against Grigori Rasputin, but "the archives of the British intelligence service (MI6) do not hold a single document linking Rayner, Hoare, or any other British agent or diplomat to the murder."