Coldharbour Mill, near the village of Uffculme in Devon, England, is one of the oldest woollen textile mills in the world, having been in continuous production since 1797. The mill was one of a number owned by Fox Brothers, and is designated by English Heritage as a Grade II* listed building
Coldharbour Mill can be found just off junction 27 of the M5 motorway near the village of Uffculme, and near to the border with Somerset. The headquarters for the mill was at Tonedale in Wellington. The water provided by the nearby River Culm was a prime factor in Thomas Fox's decision to purchase the existing grist mill. In 1797 he wrote to his brother "I have purchased the premises at Uffculme for eleven hundred guineas, which I do not think dear as they include about fifteen acres of very fine meadow land. The buildings are but middling, but the stream good." The roads in the area at the time were very poor, and finished cloth had to be carried by pack horses to the nearby ports of Topsham and Exeter, or by carrier's cart to Bridgwater, Bristol and London (a twelve-day journey).
It appears that there has been a mill of some description near the Coldharbour site since Saxon times. The Domesday Book recording two mills in the Uffculme area.
At its peak the company employed approximately 5,000 people and owned and operated nine mills and factories in Somerset, Devon, and Oxfordshire. One of the most notable satellite mills was that of William Bliss & Sons, built in 1872 after a disastrous fire in the original mill. Located in Chipping Norton, the William Bliss site was one of the grandest mills in England, complete with reading room, chapel and workers cottages. Fox Brothers bought it in 1920.
The main Tonedale site in Wellington was the largest integrated mill site in the South West of England, covering 10 acres of land and forming the hub of the Fox Brothers woollen manufacturing 'empire'. It is believed to have been the only 'Twin Vertical Woollen Factory' in the world - that is, making both worsted and woollen products, and controlling the entire process from fleece to finished cloth in-house.