Piggery and Sheep Shed, Leighton Farm

The Piggery and Sheep Shed at Leighton Farm is a Grade II* listed structure consisting of two circular sheds that are open in the center. The western shed served as a sheep house, while the eastern shed functioned as a piggery. These two sheds are connected by a long link range, which housed sheep on the north side facing the fields and likely cattle on the south side facing two stockyards. Attached to the link range is a short southern wing connected to the mill, which also accommodated cattle, with its attic probably used for fodder storage.

The buildings are single-storey and constructed of brick, featuring vent ridges and slate roofs. The link range boasts an impressive aisled cross-gable on its north side, which has a coped gable supported by moulded kneelers. The gable includes two round-headed windows that are partly louvred, along with four similar windows below. The basement of the cross-gable contains four tunnel-vaulted bays, with a stairway leading to an open walkway on the north side. This walkway is supported by a high brick parapet wall and built on a rubble plinth, featuring a large round-headed opening flanked by two lunettes, leading to five vaulted cells. To the right of the cross-gable is a shorter plinth and parapet wall.

The western sheep house has some louvres in the vent ridge but is otherwise boarded or glazed, with 20th-century windows and doors set under concrete lintels in its outer wall. The inner wall features drains at the internal floor level above a deep sump, which contains eight radiating tunnels with round-headed openings. A coped brick wall surrounds the western and northern sides of the sheep house. The eastern piggery is built on a random rubble plinth and has some louvres in its vent ridge, which is mainly boarded, along with inserted doorways in its outer wall. The piggery also includes a single-storey eastern wing, likely constructed as a cowhouse, featuring six infilled arched openings in the southern wall and large sliding wooden doors in the eastern gable.

The southern wing of the link range has louvres in its vent ridge and 20th-century openings. The circular sheds have concrete floors.