Carillion plc was a British multinational construction and facilities management services company headquartered in Wolverhampton in the United Kingdom, prior to its liquidation in January 2018.

John Laing Group plc is a British investor, developer and operator of privately financed, public sector infrastructure projects such as roads, railways, hospitals and schools through public-private partnership (PPP) and private finance initiative (PFI) arrangements. It was listed on the London Stock Exchange and was a constituent of the FTSE 250 Index prior to its acquisition of the company by the American private equity firm Kohlberg Kravis Roberts (KKR).