Oldfield Farm is important as the large group of buildings that included Oldfield Mill, the dairy, blacksmith’s shop, cooperage, wheelwright’s shop, saw mills and other estate workshops. Unfortunately, the Barn and part of the mill collapsed under the snow during the severe winter of 1962–3.

The site is now covered by a modern concrete and asbestos building. A pile of rubble and a 35ft-pulley shaft with pulleys are all that remain of the old buildings. Fortunately, the remaining part of the building contains the water turbine (of the same unknown make as the ‘Booster’) that drove the mill, together with its gearing, a cast-iron sack hoist by Appleby Brothers, an early winnower, and to show that Buscot’s pioneering days continued, a Second World War grain-drying plant, in service when Buscot boasted one of the few combine harvesters in the country, echoing Campbell’s use of an early reaper and binder in 1870.

On the north end of the building was the blacksmith’s shop with two forges, and next to this on the east was the cooperage and wheelwright’s shop. A gatepost outside this shop has a device used to shape the rims for wagon wheels. On the west are the carpenter’s and paint shops. The only other buildings at the farm are the derelict saw mills, with hardware in situ, and the railway station.
  
The blacksmith’s shop has two relics of the Campbell era: a lead plate from a wooden milk churn inscribed ‘Robert Campbell – Buscot Dairy – Faringdon’, and on the door post several brand marks ‘RC’.