What did White plaque № 8260 do at Mount Pleasant Mail Centre?

The Story

# Mount Pleasant Mail Centre Standing before the Mount Pleasant Mail Centre, you're gazing at the birthplace of one of the world's most ingenious transportation systems. On 5 December 1927, the Post Office Railway—a revolutionary automatic electric railway—began its maiden journey beneath London's streets from this very location, transforming how the capital moved its ever-growing volumes of mail. This wasn't merely another postal facility; it was the headquarters of an audacious engineering marvel that would remain the world's only dedicated postal railway for nearly a century, solving a problem that had plagued London for decades: how to shift thousands of tons of mail daily without clogging the already congested streets above. From this Mount Pleasant hub, mail traveled through six and a half miles of underground tunnels at speeds of 40 miles per hour, carried in small driverless trains that required no human operators—a pioneering achievement in automation that wouldn't be surpassed until decades later, making this ordinary-looking postal centre an extraordinary monument to mid-20th-century ingenuity.