Humans have been hanging out with the Thames for at least 400,000 years. We know this because archaeologists found a hand axe near Swanscombe made by a Homo heidelbergensis ancestor. That’s the river’s original “guest” list—and trust me, the dress code was way more relaxed back then.
By the time the Romans showed up in 43 AD, the Thames was already a senior citizen. They built Londinium on its banks, and the river was like, “Oh great, more tourists.” It has since hosted Vikings, Tudor beheadings, the Great Fire of London, and the Beatles crossing Abbey Road. The river has seen everything.
Thames through the ages: Stunning photos of London's famous river
Here’s a mind-bender: King Henry VIII died in 1547. The same raindrops that fell on his head are long gone, but the river is still flowing. The Thames is the one thing that never retired. It’s been the city’s bartender, sewer, highway, and swimming pool. And it’s still not tired!
But Isn’t 30 Million Years Just… A Guess?
Yes! And it’s a brilliantly educated guess. We can’t exactly ask the Thames its birthday. “Happy 30,000,050th birthday, mate!” It would probably just gurgle back and flood your basement. Scientists date the river by examining the fossils and gravel in its ancient terraces—like counting rings on a tree, but with more mud.
So, the “official” age keeps shifting. Some say the modern river is only 10,000 years old (after the last Ice Age). Others point to the 58-million-year-old ancestor. Honestly, the Thames is so old it probably has multiple birth certificates. Let’s just call it geologically ancient and move on.
