Just after midnight, when most of London was asleep, figures carrying headlamps and small spades were descending silently onto the slippery banks of the River Thames. Kneeling in thick mud under bridges and near ancient embankments, they sift through the silt in search of fragments of forgotten history. Some people find Roman coins. Others uncover medieval jewellery, Victorian toys or centuries-old bones. These modern treasure hunters are known as mudlarks, and for many of them, the Thames is not just a river, but a vast archaeological archive that hides thousands of years of London’s past beneath its tides.What makes mudlarking especially fascinating is that the river never stops revealing history. Each tide reshapes the coastline. Each storm or change in mud may reveal objects that may have been hidden for centuries. Along the banks of the Thames, ordinary people can still get their hands on pieces of Roman Britain, medieval London or the Victorian era.

Mudlarks searching for history still buried beneath London

Mudlarking has existed along the Thames for centuries, although its meaning has changed dramatically over time.In the 18th and 19th centuries, Mudlarks were generally among the poorest residents of London. Men, women and children searched the river banks for coal, rope, scrap metal or anything they could sell to survive. Victorian writers often described them as desperate figures wandering through dangerous mud in squalid conditions.Today, mudlarking has developed into a strictly regulated hobby pursued by licensed history enthusiasts, archaeologists and collectors. Modern mudlarks must obtain a permit from the Port of London Authority, which manages access to the river bank.However, for many enthusiasts, the appeal remains intensely personal. The excitement lies in touching objects that were last handled by someone hundreds or thousands of years ago. Unlike traditional archaeology, mudlarking puts ordinary people in direct contact with fragments of the past. A single object pulled from the mud can suddenly reconnect modern London with a life long forgotten.

obsession with the lost pigeon type

One of the most famous mudlarks is Jason Sandy, an architect and property developer who has spent years scouring the banks of the Thames near Hammersmith Bridge.sandy More than a decade of dredging has uncovered Roman hairpins, medieval coins and countless historical artefacts. But one story became a passion: the search for the lost pigeon type.Doves Type was created in 1900 by TJ Cobden-Sanderson and Sir Emery Walker, founder of the famous Doves Press. The elegant typeface came to be celebrated as one of the finest examples of typography from Britain’s Arts and Crafts movement.But after a bitter feud between the two men, Cobden-Sanderson secretly threw the metal type into the Thames during hundreds of late-night visits between 1916 and 1917, rather than letting Walker inherit it.Historians estimate that over a ton of metal fragments, possibly about 500,000 individual pieces, were thrown into the river.The story has since become almost legendary among designers, historians and mudlarks because the destruction of the Dove Type represents more than the end of a business partnership. It was also the deliberate disappearance of one of Britain’s most admired typefaces.“It’s on everyone’s bucket list,” Sandy told the BBC. “Every mudlark wants to find some, and I’m one of the lucky few who’s found so many.”

Discovery of ‘Mudlarking Gold’

For years, Sandy searched under Hammersmith Bridge in hopes of finding pieces of lost typography.At one point, he believed he had found hundreds of pieces, only for graphic designer Robert Greene to later inform him that none of them were actual Doves types.“I’ve been searching on the wrong side of the bridge for five years,” Sandy admitted.But he kept returning.Then, during an unusually low tide last September, Sandy found a rare exposed patch of riverbank after a massive accumulation of wet wipes recently became known as “Wet Wipe Island.”Within less than an hour, they recovered 12 genuine pieces of the pigeon type from the soil.“I look like a gold miner panning for gold,” said Sandy, “but I’m actually panning for the Lost Doves typeface.”For many mudlarks, such discoveries represent the ultimate prize, sometimes referred to as “mudlarking gold”.Yet this attraction is not merely financial or historical. The thrill comes from the possibility that an object lying in the mud might have a direct connection to some dramatic human story.

Strange encounters under London’s bridges

Mudlarking is not always peaceful.While searching under the Hammersmith Bridge late at night, someone reported suspicious activity near the bridge, after which several police officers suddenly arrived near Sandy.“I thought I was alone,” he recalled. “Then I heard sirens going toward the bridge.”After showing officers her mud slinging permit and explaining the story behind Dove’s Type, Sandy said police laughed and eventually escorted her safely off the shore.But some of their encounters have been far more disturbing.Sandy told the BBC that he has sometimes found human remains while shoveling mud and has had to contact the police.“I had to call them because of the bodies and even bones found in the river,” he said.In another strange incident, they reportedly discovered the freshly shed skin of a 6ft boa constrictor near the water’s edge, possibly from an abandoned exotic pet.The unpredictable nature of mudlarking keeps many enthusiasts from returning. Every trip to the coast holds the potential for discovery, surprise, or even danger.

Why does the Thames keep revealing history?

The Thames is particularly suitable for mudlarking due to its tidal nature.Twice every day, the river rises and falls dramatically, exposing layers of soil that have preserved the objects over the centuries. Storms, erosion and changing tides constantly uncover new artifacts hidden beneath the surface.Archaeologists often describe the Thames Bank as one of Britain’s most important archaeological sites as it contains traces of almost every era of London’s history, from Roman Britain to the Industrial Revolution.Mudlarks have over the years discovered Roman pottery, medieval pilgrimage badges, Tudor shoes, clay smoking pipes, coins, weapons, jewelery and even prehistoric bones.Some finds eventually reach museums including the Museum of London and the Victoria and Albert Museum.At the same time, mudslinging also raises difficult questions about conservation and ownership. Responsible Mudlarks are expected to report historically significant discoveries, and many work closely with museums and archaeologists to help preserve London’s history rather than collecting objects privately.

Returning lost history to London

For Jason Sandy, mudlarking isn’t just about collecting items.Recently, he donated dozens of recovered Doves type fragments to the Emery Walker House, which is now managed by the Emery Walker Trust.The museum preserves the house associated with both Walker and Cobden-Sanderson, retaining much of its original Arts and Crafts interior.Sandy said he hoped the type fragments eventually recovered would help reconstruct a complete alphabet.He said, “I just love the story and I feel honored to be able to make a modest contribution.” “And return them to the lost type that was in the river for over 100 years.”This sense of management is becoming increasingly common in the mudslinging community. Many enthusiasts see themselves not merely as collectors but as temporary custodians of objects belonging to London’s wider cultural memory.

Why does mudslinging continue to fascinate people?

Part of the appeal of mudlarking lies in the uncertainty. Each tide has the potential to reveal something unseen for centuries.For many mudlarks, the river almost comes alive, constantly releasing fragments of memory while hiding countless others beneath the changing tides. The Thames doesn’t just preserve objects. It preserves stories, conflicts, trade, loss, and fragments of ordinary life that would otherwise disappear from history entirely.And somewhere beneath the deep waters of the Thames, thousands more pieces of the lost pigeon type may still be buried, waiting for another mudlark to find them.