The Paper Mill Museum, Dacorum

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What is recorded here

Frogmore was recorded as a corn mill by 1086 and became a paper mill by 1774. In 1803 Sealy and Henry Fourdrinier paid for Bryan Donkin to install the world's first working machine that produced a continuous roll of paper. Development cost £60,000 and bankrupted the brothers, but the method changed paper manufacture. Commercial work ended in 2000, when the mill opened for visits, education and community use.

Why it was built

A mill stood on the River Gade island by 1086, though its first building date is unknown. Water first powered corn grinding, later wool fulling, and by 1774 paper making. The river and canal-side position supplied both power and transport for the changing work.

People and work

Sealy and Henry Fourdrinier financed the 1803 machine, based on Nicolas-Louis Robert's design and engineered by Bryan Donkin. It made a continuous paper roll instead of separate hand-formed sheets. The £60,000 development cost bankrupted the Fourdriniers by 1810 even as their system spread.

How it changed

The mill began chemical paper-making from wood in 1851. The British Paper Company took over in 1890 and bought the site in 1929. When production stopped in 2000, the Apsley Paper Trail changed the working factory into a visitor, teaching and community centre; a 2022 fire badly damaged its newer visitor building.

What survives

The island mill and paper-making machinery survive beside the River Gade and Grand Union Canal. Visitors can see a model of the Robert continuous machine and the buildings where mechanised paper production began, although the 2008 visitor centre suffered serious fire damage in January 2022.

Why it mattered

The 1803 machine replaced sheet-by-sheet work with a continuous roll, changing how paper could be made in quantity. Frogmore preserves the place where that practical change first worked, alongside the financial failure of the brothers who paid to develop it.