Costain

Simulation Systems Limited, a provider of innovative technology-based solutions, primarily for the highways sector but with the potential for wider application across the group. SSL, established in 1979 and with 165 people, provides integrated hardware and software-based solutions across a broad spectrum of traffic monitoring and management requirements.

Rhead Group, established in 1985 and operating with over 550 people, provides a range of solutions for the lifecycle of infrastructure, construction and asset management programmes, primarily in the UK, for a number of blue-chip customers including National Grid, Wales & West Utilities and BAE Systems. Rhead Group’s senior management team, including Nigel Curry, Rhead Group CEO, will remain with the business.

EPC Offshore is a specialist oil & gas project management services company. EPC Offshore is a field development and project management specialist providing client-side services to North Sea oil and gas companies. The company is differentiated by its program management expertise and the highly effective application of proprietary in-house systems and processes.

Promanex operates as an industrial support services business providing facilities management, installation, repair and maintenance.

ClerkMaxwell An independent provider of multi-discipline engineering, project management and asset support services.

ClerkMaxwell Limited provides project management, engineering, and support services to the upstream oil and gas market.