Boyne Engineering Works Offices

The Boyne Engineering Works offices, built in 1858 with later 19th-century alterations, were constructed for the firm of Manning, Wardle and Co. The building is made of red brick and features a slate roof with a dentilled eaves cornice. It is two storeys high and possibly consists of two separate builds, with seven first-floor windows. The facade is symmetrical, featuring a central panelled door with an overlight set in a round arch with a keystone. This is framed by a tall stone surround with pilasters, an entablature, and a cornice. The windows are 4-pane sashes in segmental headed openings, each with keystones and stone sills. On the right return, there is a blocked doorway to the left, with windows matching those on the front, as well as a screen wall and attached gates. The interior has not been inspected.

Historically, the firm was established by several key employees of E.B. Wilson's Railway Foundry, along with Alexander Campbell, who was brought in by shareholders to manage the company after Wilson's departure. Together with C.W. Wardle and John Manning, the new company purchased land adjacent to the Railway Foundry from Viscount Boyne and began operations as general engineers. Following the auction of the Railway Foundry estate in 1859, Manning Wardle acquired the designs for 17 different types of engines and began manufacturing locomotives of Wilson's design, focusing on four and six coupled saddle tanks for contractors and industrial use. Alongside the nearby Hunslet Engine Company, this area became a leading site for railway engine production in the country, with many products being exported.