15th May 2026

Hull Heat Network Unearths Centuries of History Beneath City’s Streets

The Hull Heat Network project has been giving archaeologists an insight into the city’s medieval past. Recent discoveries dating back up to 700 years have been unearthed during installation works for the new heat network.

As part of ongoing works to lay the 7km heat network across Hull during phase 1, Vital Energi’s civil engineering teams working on Alfred Gelder Street unearthed a fascinating collection of medieval pottery, with some pieces estimated to be between 500 and 700 years old.

Hull Archaeological Finds 1

An imported German stoneware jug approximately 500-years old

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Hull’s Old Town has been continuously occupied for at least 800 years, and the trenches we’re digging for the heat network are giving us a unique window into that history. When digging in historically sensitive areas, we often make these discoveries, which is why we work with local archaeologists who can carefully catalogue and preserve these finds to develop a better understanding of the city’s history.

Andrew Wightman, Regional Director, Vital Energi

Among the discoveries so far:

· A 500-year-old German stoneware jug

· Handles from a 600-year-old pottery cistern

· A medieval jug dating back up to 700 years

· Wooden staves from a barrel

· A well-crafted medieval stone padstone, once supporting a timber post in a medieval house

In addition, archaeologists recovered soda bottles from around 130 years ago, believed to have come from the basement of the Anchor Inn, which was demolished in the early 20th century to make way for Alfred Gelder Street.

Peter Connelly, Archaeology Manager with Humber Field Archaeology, is working with Vital Energi to examine and preserve any historical finds. He explains: “The hidden history we discover in Hull never ceases to amaze.”

“During these digs, we’ve discovered some fascinating artefacts from centuries ago to tell us more about Hull’s past and we hope to be able to display these for the public to see for themselves.”

The archaeologists will continue to work with Vital Energi as they excavate trenches for the heat network and will hopefully uncover more clues about Hull’s rich history.

Hull Archaeological Finds 2

Two 600-year old handles from a large pottery cistern used to hold water or beer.

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Hull Archaeological Finds 4

Soda bottles around 130 years old and recovered from what is probably the basement of the Anchor Inn.

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Hull Archaeological Finds 3

A medieval jug of around 600-700 years old, probably used as a daily household item.

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