Semple & McKillop Ltd

Semple & McKillop Ltd is a multi‑award‑winning building‑services practice that delivers comprehensive mechanical, electrical, low‑carbon and specialist engineering solutions for the built environment. Drawing on extensive experience in new‑build and refurbishment projects, the firm serves a broad client base across the public and private sectors, with particular strength in education, healthcare, housing, retail and commercial developments.

The company’s service portfolio covers the full spectrum of building‑services design and delivery, underpinned by rigorous environmental, quality and health‑and‑safety standards accredited to industry benchmarks. By working closely with design and construction partners, Semple & McKillop ensures that each project—from the historic St Ita’s Hospital refurbishment to the £37.5 m Northwood learning campus—achieves the highest performance and sustainability outcomes.

With offices in Belfast, Monaghan, London and Enniskillen, the firm combines a strong regional presence with an international client reach, and is recognised for its investment in people, offering a professional yet supportive environment that consistently earns praise for staff development and client satisfaction.