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Newmill

New Mill stands at the southern end of the historic village of Llancarfan, beside the Nant Llancarfan, and was one of the two water-powered mills that formed an important part of the village's historic economy. The historic landscape assessment describes Llancarfan as having two principal settlement centres: the area around St Cadoc's Church and the settlement around Cross Green and the Old Corn Mill. New Mill forms a separate industrial focus farther south, where the stream was harnessed to provide power for milling.

The precise date when New Mill was first established is not yet clear, but the evidence indicates that it is an old-established watermill rather than a nineteenth-century creation. The archaeological record identifies milling as a characteristic feature of Llancarfan's historic landscape, with water from the Nant Llancarfan being used to power mills. By the time of the 1840 tithe survey, New Mill was already an established mill complex; the later First Edition Ordnance Survey map of 1878–79 shows two parallel ranges of buildings at the southern end of a distinctive crescent-shaped millpond.

The mill's position was particularly well suited to water power. The Nant Llancarfan flows through the valley and provided both a water supply and the means of generating mechanical power. A millpond accumulated water before it was released through the mill system, creating the fall and flow required to turn the waterwheel. The survival of the pond and associated water-management features is therefore an important part of the archaeological significance of the site, even though the working mill itself has disappeared or been substantially altered.

New Mill was part of a wider pattern of small-scale rural industry in Llancarfan. The village also possessed the Old Corn Mill at Cross Green, whose surviving building retains its mill wheel, while the archaeological study records the associated mill races and water-management systems at both mills. There was also formerly a smithy in the village. Together these features show that Llancarfan was not simply an agricultural settlement: the stream supported a small but significant rural industrial economy, processing the products of the surrounding farms and providing services to the local community.

By the late nineteenth century, New Mill was clearly an established feature of the village. The 1878–79 OS map shows the mill buildings, the millpond and the surrounding buildings, including the Old Parsonage immediately to the north. This is particularly useful because the overall layout of Llancarfan had changed remarkably little between the 1840 tithe map and the first OS survey. The mill therefore provides a valuable surviving illustration of the way in which the village's buildings, watercourse and agricultural landscape were interconnected during the nineteenth century.