known by different names including Miln of Errol, Errol Pow and Harbour of Errol. It was granted a charter in 1662 and had its own meal mill, replaced with a horsemill by the 1870s. It is estimated around 200 people lived there in 1700s. The piers at Port Allen were associated with a toll house and an Inn (now a farmhouse). Herdman noted in 1791 that large quantities of grain were shipped from this port. 'Pow of Erroll' and the mill can clearly be seen on the Roy Military Survey map of 1747-1755 [grid ref NO 258 209]. The O.S. six-inch first edition map of 1861 shows a pier and pier crane associated with the port, and water-driven corn and barley mill with a dam and lead. Errol aerodrome The pioneer Scottish aviator Preston Watson is associated with the early days of the airfield in the 1900s, which is located on flat land between Errol village and the hamlet of the Grange. After the outbreak of the Second World War in 1939, the Ministry of Defence requisitioned the land from local farmers and the aerodrome opened as an RAF station for training pilots on 1 August 1942. Errol aerodrome was in military use until the summer of 1948; material was brought in by transport planes with loading and unloading carried out by German prisoners of war held in camps nearby. From the late 1940s Errol was proposed as an airport but met with objections and the airfield was sold in 1961. In 1988 the RAF Errol Airfield was purchased by Morris Leslie to start auctioning plant and is now a mixed use business park and the Morris Leslie Group's headquarters. The main runway continues to be used for aviation. Inchcoonans tile and brick works It is thought a clay works of some kind has operated at Errol for centuries; using local alluvial clay to make bricks was introduced by the Romans and revived in the sixteenth century. The site features two Beehive kilns, which are the only remaining examples of their kind in Scotland, and are category B listed. Inchcoonans Tile Works opened in 1855 producing mainly bricks for building and field drainage tiles. From the 1870s it was operated by the Pitfour Patent Brick and Tile Co., and from 1910 by A. Fraser Ltd.of Anniston Brickworks, Angus, until 1990. It was reopened in 1994 by Errol Brick, but was