The deal adds more than 25 years of engineering know-how to the group and strengthens its technical depth as demand grows for more complex, end-to-end delivery across regulated infrastructure.
Simkiss Control Systems works in Rochdale
Simkiss specialises in the design and build of control systems, control panels and switchgear, with services covering installation, testing, commissioning and long-term maintenance.
It employs around 100 staff and turned over more than £15m according to last published accounts.
Simkiss’ work is focused largely on the utilities sector, supporting critical national infrastructure programmes.
United Infrastructure said the acquisition broadens its in-house capability across power, energy and utilities, positioning the group to take on larger and more technically demanding frameworks and long-term programmes.
Neil Armstrong, chairman and ceo of United Infrastructure, said: “This acquisition is a strong strategic fit for United Infrastructure. Simkiss Group brings proven design and engineering expertise that enhances our technical capability across energy and power activities.
By investing in these skills, we are strengthening our ability to deliver more technical and integrated solutions for our customers operating in critical infrastructure.”
The Simkiss buy is the latest in a series of bolt-on acquisitions by United Infrastructure as it builds scale and specialist capability across utilities and energy. The group has been steadily picking up niche engineering businesses to deepen technical expertise and support growth on major programmes.
Recent acquisitions
- December 2025 – Acquisition of Wood’s UK Transmission and Distribution, strengthening United Infrastructure’s position in electricity transmission and distribution.
- June 2025 – Majority stake taken in Glenelly Infrastructure Solutions, a specialist contractor focused on power distribution networks.
- May 2025 – Acquisition of Peter Duffy, a civil engineering contractor specialising in water infrastructure works.
- March 2025 – Takeover of Jones, a leading power distribution and street lighting contractor.
- October 2024 – Acquisition of PiLON, expanding United Infrastructure’s footprint in social housing property services.
- June 2024 – Majority stakes acquired in GTEC, a specialist net-zero training provider, and Heatly, a digital platform supporting heat pump design, surveying and installation.
- April 2024 – Acquisition of AFECO, an independent specialist engineering services and solutions business focused on the water, marine and energy sectors.
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