Doctor RV Singh was a historian who specialised in the period from 1936 to 1948.
He wrote various essays on the Ironside Project, claiming he witnessed the Ironsides first-hand, as well as a Spitfire adapted for spaceflight. However, when his essays were rediscovered in the 1960s, he claimed they were a childish prank and rejected their veracity.
Shortly before Singh's death in 2010, however, a former colleague of Professor Maxwell Grey spoke with Singh, who swore his original writings were true and the Ironsides and Spitfire existed. After taking over the Into The Unknown blog, Grey wrote about Singh in a post on the Mandela Effect, noting that his former colleague had also met many of Prime Minister Winston Churchill's staff, who corroborated Singh's recollections. (PROSE: The Mandela Effect, Or Monsters on the Streets of London)