A 70-year-old steam engine surprises commuters at a London train station. Screenshot: Storyful
"This morning 29 November 2016 the commuters were stunned to see this unexpected old steam train which had passed trough Norbury," the video's description reads.
"Built in December 1946, Lord Dowding was one of the first members of the 'Battle of Britain' class. Identical in all but name to the 'West Country' class, the Southern Railway decided to name the class after squadrons, airfields, commanders and aircraft that had participated in the Battle of Britain.
Air Chief Marshal Hugh Dowding was an officer in the Royal Air Force. He served as a fighter pilot in the First World War and in the Second World War was the Commanding Officer of RAF Fighter Command during the Battle of Britain. He was credited for playing a key role in the defeating Hitler's plan to invade Britain."