Carillion PLC (OTCMKTS:CIOIF) was a United Kingdom–based provider of integrated construction and facilities management services, with a portfolio spanning public and private sector clients. The company delivered building and infrastructure projects, mechanical and electrical engineering, and maintenance solutions, alongside support services such as cleaning, catering, security, and landscaping.
Carillion operated across a range of end markets including healthcare, education, defense, transport infrastructure, and utilities. Its project capabilities extended from the design and construction of hospitals, schools, roads, and prisons to long-term facilities management contracts under public–private partnership (PPP) and concession arrangements.
Founded in 1999 through the demerger of Tarmac’s construction division and headquartered in Wolverhampton, England, Carillion expanded internationally through organic growth and strategic acquisitions. At its peak, the company maintained operations in the United Kingdom, Canada, and the Middle East, employing over 40,000 staff and collaborating with governments, transport agencies, and major corporations.
During its later years, Carillion was led by chief executives including Richard Howson and Keith Cochrane. In January 2018, following mounting contractual losses, liquidity challenges, and accounting concerns, the company entered compulsory liquidation, marking one of the largest corporate failures in British history.
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