"The three-minute journey from Wandsworth Town to Clapham Junction takes place on a stretch of rail laid between 1838 and 1863. It's not known where the passenger embarked and even less clear where the announcer or driver, er, got off but Shepherd's Bush, Cockfosters and Mudchute are all very possible."
Not content with the chap who posted this claiming it was on a tube train, El Reg now puts more nonsense in its article. The train in question, a series 458 or possibly 707, would be on the Reading, Windsor or Addlestone service (third rail 750V). The line may have been opened in 1838 but I would hope the rail itself was laid much more recently. The driver doesn't normally have access to the public announcement system, the guard does. Yes, he may have done something irregular in his guards van. Much more likely the whole thing has been made up by Mr Brunton to moan about SWR (or was it TFL and he edited the wrong tape?). Shepherds Bush, Cockfosters etc are quite definitely not possible stops on that line. And judging by the few people in the carriage it was hardly filmed on a Friday morning near Clapham Junction, the trains are always jam packed there.