Contractor Carillion revealed last week that equity stakes it holds in Private Finance Initiative contracts such as the GCHQ communications centre at Cheltenham and the M6 toll road have almost tripled in value.
Contractor Amec said its stakes in rail and hospital schemes had almost doubled last year.
The Construction Products Association and the National Health Service Confederation have appealed to the Treasury to simplify the bidding process for PFI contracts to build hospitals.
The confederation warned that arrangements are too inflexible, with modifications more complicated and expensive under PFI.
France used a two day conference organised by the Organisation for Economic Co-operation & Development to gear itself up to become the world's leading exporter of nuclear energy. With almost 80% of its energy generated through nuclear power, the country hopes to exploit this position and become the world's leading nuclear power producer.